I did not bother to read the entire post, but I am going to toss my 2 cents.
Both Fire451 and myself had 2.8's that were high 14 second cars at the track. Running motor alone.
The tweaks that I found to make the most diff
Decent cam, 1.6 rockers, 19# injectors with custom prom chip and adjustable Fuel Pressure Regulator.
THE BIG ONE
MSD Ignition System not just the coil, but the wires, the box and the coil Plugs pushed to .050 gap hot spark, plus more fuel plus big cam equals extra horsepower.
Underdrive pulley. Dual pulleys, the alternator and the crank pulley.
P.S. I am not sure if I will get back to this thread, so PM if I don't reply to any questions.
We both had stock intakes and factory exhaust manifolds. They were ported exhaust manifolds but none the less the stock logs.
Cam, Ignition and fuel.
If you give it more air, give it more gas, and give it more spark, all the rest is the driver. I have scans of our time slips around here someplace. I think I even have a video kicking around.
------------------ 85GT 4spd MSD Everything, Big Cam and Nitrous. www.captfiero.com
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08:58 PM
Firefighter Member
Posts: 1407 From: Southold, New York, USA Registered: Nov 2004
Am I missing something or is suggesting a turbocharger just to basic an answer to the question????????? Ed
That is not an option for me with the smog nazis in this state.
I serously considered it. The only way to legally do that is to find a wrecked car that came stock with a turbo and do a engine swap that transferred all the smog equipment and electronics with the engine. So a turbo 3.1L would be a good choice. I decided that the headache with the smog board and the time and effort was not going to be worth it for me.
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09:37 PM
Doug85GT Member
Posts: 9970 From: Sacramento CA USA Registered: May 2003
Get one of our high flow intake manifolds, the stock manifold will almost negate or at the very least, limit gains from most anything else you do aside from a turbo etc, even then, they will help those too. Don't take my word for it, go look at the write ups and dyno results etc here on PFF. See 'hi-flo updates.'
I would really really like to use your manifold.... the problem is that it just doesn't look stock. I would honestly be willing to pay that same price, for something only half as efficient as your manifold (though better than the stock) if it looked stock. Like if someone took a stock manifold, opened it up and ported the hell out of it inside and then re-welded it...
Honestly, if someone could make me a totally stock looking manifold that had more interior volume... I'd be willing to pay a grand... but for me things have to look stock.
------------------ Todd, 2002 Ford Crown Victoria LX 1997 Pontiac Grand Am GT 1987 Pontiac Fiero SE / V6 5-Speed 1987 Pontiac Fiero SE / V6 (3.2L) Auto 1984 Pontiac Fiero 2m4 SE 1981 Pontiac TransAm (sbc 350) 1973 Volkswagen Type-2 Transporter
how come both me and capt. fiero are claming similar gains out of the same mods....but he doesnt get doubted, sorry to the original poster for hijacking the thred, but in all the hell i hope you got the info you were looking for, btw how much $$ for your 1.6's (what did u pay i mean)
[This message has been edited by 88 forumla (edited 04-25-2005).]
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10:03 PM
82-T/A [At Work] Member
Posts: 25517 From: Florida USA Registered: Aug 2002
I did not bother to read the entire post, but I am going to toss my 2 cents.
Both Fire451 and myself had 2.8's that were high 14 second cars at the track. Running motor alone.
The tweaks that I found to make the most diff
Decent cam, 1.6 rockers, 19# injectors with custom prom chip and adjustable Fuel Pressure Regulator.
THE BIG ONE
MSD Ignition System not just the coil, but the wires, the box and the coil Plugs pushed to .050 gap hot spark, plus more fuel plus big cam equals extra horsepower.
Underdrive pulley. Dual pulleys, the alternator and the crank pulley.
P.S. I am not sure if I will get back to this thread, so PM if I don't reply to any questions.
We both had stock intakes and factory exhaust manifolds. They were ported exhaust manifolds but none the less the stock logs.
Cam, Ignition and fuel.
If you give it more air, give it more gas, and give it more spark, all the rest is the driver. I have scans of our time slips around here someplace. I think I even have a video kicking around.
Ahh.... I just noticed, you have an 85 Fiero GT 4-Speed... those are said to be the quickest stock Fieros ever made.
I used to have a 1985 Fiero GT 4-Speed that I bought from some guy in Ohio named John Altman (used to be on this forum). I got it for like $1,400 bucks. The car was beat to hell.. it had 143k miles on it when I got it.
He had replaced the transmission with a 4.10:1 from a 4 cyl Cavalier, and he decked the heads. The compression ratio was raised a fair amount.. he did this actually because they had warped slightly.. so when he reassembled the motor, he had them decked.
There was no cat, and a rusted out muffler. The car was a bone stock, no options car... A/C didn't work.. and the compressor was missing. It had nothing but tilt steering and a leather steering wheel. It had a bare decklid, a solid roof, and WS6 suspension.
He also had the exhaust manifolds hogged out. I ran a 14.82 at 89.3 miles an hour at Moroso Motorsports Park during Test & Tune Saturday back in... what... 1998 or 1999? I went up there earlier but they wouldn't let me run because my windshield was cracked. I had BF Goodrich T/A Comps on 14" wheels (215/60/14s).
So it's absolutely possible.
Now... I have a 1987 Fiero SE / V6 Automatic with a 3.2, 17# injectors a TH-125 with the GX3 3.33:1 final drive with a torque converter from a 4 cyl (200rpm higher stall) and I don't get anywhere near those times... I think I run maybe a low to flat 15 second quarter mile on a good day...
Those 85 GTs are ruthless.... if I EVER run across a deal on one again... I'm going to get it.
Oh yeah... I put 20k miles on the car and then sold it for 1,600 bucks!
------------------ Todd, 2002 Ford Crown Victoria LX 1997 Pontiac Grand Am GT 1987 Pontiac Fiero SE / V6 5-Speed 1987 Pontiac Fiero SE / V6 (3.2L) Auto 1984 Pontiac Fiero 2m4 SE 1981 Pontiac TransAm (sbc 350) 1973 Volkswagen Type-2 Transporter
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10:10 PM
Oreif Member
Posts: 16460 From: Schaumburg, IL Registered: Jan 2000
That is not an option for me with the smog nazis in this state.
I serously considered it. The only way to legally do that is to find a wrecked car that came stock with a turbo and do a engine swap that transferred all the smog equipment and electronics with the engine. So a turbo 3.1L would be a good choice. I decided that the headache with the smog board and the time and effort was not going to be worth it for me.
I thought the Design One turbo system was 50 state legal? I also thought the turbo set-ups done by West Coast Fiero were "smog nazis" legal as well?
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11:24 PM
Fastback 86 Member
Posts: 7849 From: Los Angeles, CA Registered: Sep 2003
how come both me and capt. fiero are claming similar gains out of the same mods....but he doesnt get doubted, sorry to the original poster for hijacking the thred, but in all the hell i hope you got the info you were looking for, btw how much $$ for your 1.6's (what did u pay i mean)
Do some more reading. He swapped cams, injectors, rockers, and his entire injection system. Basically, he did major engine work. You did a tune up, replaced a few old parts that you could reach without pulling the motor and rebuilding it.
Also, he's been to the track and proven that he has a 14 second car.
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11:30 PM
Oreif Member
Posts: 16460 From: Schaumburg, IL Registered: Jan 2000
how come both me and capt. fiero are claming similar gains out of the same mods....but he doesnt get doubted, sorry to the original poster for hijacking the thred, but in all the hell i hope you got the info you were looking for, btw how much $$ for your 1.6's (what did u pay i mean)
You'd better read his post again. "Decent cam, 1.6 rockers, 19# injectors with custom prom chip and adjustable Fuel Pressure Regulator. Underdrive pulley. Dual pulleys, the alternator and the crank pulley. They were ported exhaust manifolds "
He installed a better/bigger cam, ported the exhaust manifolds, and had the PROM custom programmed for the increased flow the cam created. Not to mention he has a 1985 with a manual trans which is already in stock form .5-.8 seconds faster (and lighter than your Formula). The only thing you did that he did was the MSD ignition. As he states "Cam, Ignition and fuel." Your post only covers one of these. As many have stated, flow is the key to power. The one way to increase flow is to install a larger/better cam.
[This message has been edited by Oreif (edited 04-25-2005).]
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11:34 PM
Apr 26th, 2005
Doug85GT Member
Posts: 9970 From: Sacramento CA USA Registered: May 2003
I thought the Design One turbo system was 50 state legal? I also thought the turbo set-ups done by West Coast Fiero were "smog nazis" legal as well?
A turbo is one of the first things that I looked into after I bought my car since I am very familiar with turbo chargers and I have a couple extra laying around.
I don't know about Design One. I have never contacted them. It would be nice if they do have a CARB number. I have spoken to Chris West on the phone for about a good 1/2 hour on the subject. He is a really great guy!
He explained the entire CA smog system to me and the hoops that I would have to jump through to just bolt a turbo onto my car. In the end it came down to either spending a lot of money on a complete engine swap to a turbo engine, taking the entire turbo setup off every 2 years to get the car smogged or going to a "bandito" smog station (as he put it) and paying a few hundred dollars under the table to get my car smogged.
That was about 2 years ago that I spoke to him about it. If he has come out with a turbo kit since then that is CARB certified, then I would have to look into it. CARB certification is a long process. Last time I checked, WCF was still trying to get CARB certification for some of their close to stock headers.
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02:06 AM
Fastback 86 Member
Posts: 7849 From: Los Angeles, CA Registered: Sep 2003
A turbo is one of the first things that I looked into after I bought my car since I am very familiar with turbo chargers and I have a couple extra laying around.
I don't know about Design One. I have never contacted them. It would be nice if they do have a CARB number. I have spoken to Chris West on the phone for about a good 1/2 hour on the subject. He is a really great guy!
He explained the entire CA smog system to me and the hoops that I would have to jump through to just bolt a turbo onto my car. In the end it came down to either spending a lot of money on a complete engine swap to a turbo engine, taking the entire turbo setup off every 2 years to get the car smogged or going to a "bandito" smog station (as he put it) and paying a few hundred dollars under the table to get my car smogged.
That was about 2 years ago that I spoke to him about it. If he has come out with a turbo kit since then that is CARB certified, then I would have to look into it. CARB certification is a long process. Last time I checked, WCF was still trying to get CARB certification for some of their close to stock headers.
Nothings changed, unfortunately. I'm going with the intake swap every 2 years. I can swap out the Trueleo Hi Flow manifold for the stock ones in an hour or 2 tops. Small price to pay, I say. I have to swap the CRX intake for the stock one anyway, might as well do it all while I'm at it.
in alb we have smog but we also have a lot of people who can accedentally smog the wrong car for you too bad i met him AFTER i replaced my entire smog sys
Has anyone here seen a dyno chart of a normally aspirated 2.8 doing more than 125rwhp? I have been here since 1999 and only saw the ones from 1FST2M6. Too sad he got into Fiero business and got burned but his research still lives on. This is an awesome forum (I participate in many) but the worst thing it has is that we lack dyno data (facts) for the most typical mods. And I'm talking about dyno charts from several people for the same mod so it can be corroborated over and over. If you go to a Vette, Mustang or Lightning forum you can 10 dyno charts for an under pulley or a brand of plugs. We just talk by word of mouth or because someone once told someone who had a cousin who had a 2.8 Citation who.... I know many may not want to spend $60 in a dyno session but they are getting cheaper and at least a baseline and one after mods should provide you valuable data. 14HP from 1.6 rockers in a Fiero 2.8? Show me the dyno chart. I have seen that HP gained by those in dyno charts but from nicely headed SBCs. 180hp in a 2.8? Show me the 150rwhp dyno chart and I'll believe your claims. Sorry if I'm a little strong. Give me the -s.
We have charts (trueleo.com) for a NA 3.4 with no other mods other than our intake and chip. OK it's a 3.4 and not a 2.8 but that's not really all that many more cubes. Maybe one of our customers will post some dyno sheets, that's a hint guys.....
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10:03 AM
Alex4mula Member
Posts: 7410 From: Canton, MI US Registered: Dec 1999
I know. I have seen several 3.4s after swap. Even V8s are scarce if not non existent. Everybody claim 350-400HP V8s but have never seen any for those either
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10:29 AM
Pyrthian Member
Posts: 29569 From: Detroit, MI Registered: Jul 2002
we be to cheap...thats why we ended up with Fiero's.... maybe, back when these things was new, and the owners had $$$, they shoulda dyno'd stuff but, I think everyone agrees, the quest for 2.8 Fiero power is in the intake. by the old style rules (cam\carb\header) we should be able to easily get 1 hp per cube. thats means 180 isnt out of reach. new style rules (boost\headers\stickers), you should get 100 hp per liter. but, thats turbo'd & DOHC. so, scratch that. also, carb is out of the question, due to smog rules. so, that leaves hogging out your existing intakes. WCF has an upper plenum, that may look stock enough. there is much porting than can be done in the heads & the intakes. get a dremel, and tear that motor down, get the heads off, and start porting. you can also get a 3.1 crank & pistons for a few more cubes, but being this is a fresh motor, maybe next rebuild.
OK, so I am not having to pass emissions with my 85GT, however, Carb's can be set up to pass emissions. You set your jetting and timing correctly and it will run clean, with a CAT. Where it becomes harder is with a hot cam that overlaps more.
That being said, it is really tempting to keep the stock intake and goodies and put them back on for emissions. That is a good idea.
The reason for going to FI for the manufacturers is simply that carbs need adjusting and most carb'd cars cannot maintain their fuel ratios year in and year out without some tweeking. The FI cars have computers, sensors, and all that jazz and can be made to consistantly pass emissions, with little additional servicing to do it.
Capt Fiero is dead on correct, with an 85GT 4-speed. You just have to leave out one factor in his build and you have a slower car.
Mine, frankly, may not be as fast as his because I am not putting in a cam, or nitrous. That being said, it will still be fast if I've done the job right on my build.
Arn
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11:06 AM
PFF
System Bot
lou_dias Member
Posts: 5389 From: Warwick, RI Registered: Jun 2000
the 146.3 was on a Grooms 3.4 with the 260 cam the 149.8 was a 100K+ 3.4 with darrel morse TB and 272 cam along with all the other mods from the earlier grooms engine
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06:10 PM
will_p Member
Posts: 214 From: St. Joseph MO, U.S. Registered: Apr 2003
JUST THESE SIMPLE CHANGES GET YOU HIGH 14'S, I posted this earlier but it ended up on the very bottom of page one, thought some of you might have missed it, This was e-mailed to me by Travis "1FST2M6"
bruellen muffler, the muffler is a bit longer than a flowmaster but fits just fine in the factory location. the x-flows and dual/dual, single dual all had too much weight or too much back pressure. uum brullenexhaust.com to pick up one.. it was about $140. you'll need to replace the pipe from the y-pipe to the cat as well. basic mods..
decent rear tires at 15-18psi 4000rpm clutch dump, koni or Bilstein shocks(i'm sure KYB would be fine), Eibach springs, remove front anti sway bar move it to the back with 94 honda accord end links. MSD 6A, NGK plugs, Napa Beldan wires nothing special, Crane PS91 coil, K&N Cone filter, CLEAN INJECTORS! advance timing 4*, under drive pulley, 160' thermostat or just drill a 5/32" hole in exsisting unit, do you have a short shifter? Wrap stock ported manifolds with ceramic header tape (dramaticly reduces engine bay temps), move the battery to the front (not a must but helps) remove screens from under the rear air cleaner and battery cover to aid in heat evacuation of the engine bay. JUST THESE SIMPLE CHANGES GET YOU HIGH 14'S..
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08:39 PM
Alex4mula Member
Posts: 7410 From: Canton, MI US Registered: Dec 1999
the 146.3 was on a Grooms 3.4 with the 260 cam the 149.8 was a 100K+ 3.4 with darrel morse TB and 272 cam along with all the other mods from the earlier grooms engine
Nice cars But not 2.8 charts....
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10:04 PM
Apr 27th, 2005
lou_dias Member
Posts: 5389 From: Warwick, RI Registered: Jun 2000
my stock 100k 88 2.8 did 112rwhp back in '01 or '02. I posted a dyno then, didn't bother saving it. So I guess I can rightfully claim the swap with mods got me 38 rwhp or ~50 gross hp.
[This message has been edited by lou_dias (edited 04-27-2005).]
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06:31 AM
Alex4mula Member
Posts: 7410 From: Canton, MI US Registered: Dec 1999
Like I said before for those we have plenty. But I know many here would love to see several charts for a 2.8 for power pulleys, bored TB, ported headers, headers, ported manifold, CAI, stock K&N, chips, Thermostats, plugs, spark wires, aftermarket coils, roller rockers, ported plenum, timing changes, different mufflers, cat/no cat, bigger exhaust pipe, etc. etc.. How much HP/$$ do we get so we can prioritize the mods? I know that exactly for my other cars but not for a Fiero
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08:44 AM
Pyrthian Member
Posts: 29569 From: Detroit, MI Registered: Jul 2002
many mods overlap in HP created, or need other mods to be effective. doing a dyno run stock, then a dyno run with a Crane 272 cam, you will xxx results. doing a dyno run stock, and doing a dyno run with a Darel Morse bored TB & plenum, you will get yyy results. xxx+yyy will not equal what you get with a Crane 272 + Darel Morse bored TB, because the mods compliment each other. Same thing, other way - Crane 272 cam, xxx results, CompCams 1.6 rockers yyy results. now, xxx+yyy will be greater than if you actually did both, because the mods overlap. we cant dyno every combination. anyways - my suggestion to TRY and get 180 from a 2.8 would be - and it AINT smog legal - start with stroker crank (yeah, its not a 2.8 anymore, but its still the same motor) 10:1 Pistons underdrive pulley Crane 272, or maybe even a Crower monster cam Gen IV alum heads-ported & polished gasket matched-polished 3400 intakes, tb, ignition, sensor setup & ECM 17# injectors ditch Cat, 2.25 exhaust, headers basicly - making it a Gen IV 3100 with a strong cam, higher compression & some porting/polishing oops, maybe overshot - maybe hitting 200
start again - stroker, 10:1, Crane 272, pulley - OK iron heads - ug - port port port & polish stock intake - port port port & polish. Francis T/True Leo intake with 62MM throttle body full WCF exhaust, ditch Cat full MSD ignition yeah - thats 180
dont think its possible in the state of california to have 180 HP from a 2.8 Fiero. sorry.
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09:21 AM
will_p Member
Posts: 214 From: St. Joseph MO, U.S. Registered: Apr 2003
Well in the "fieros all fired up" article all they did was blue print the engine, add a cam almost axactly the same as the h-272, port the exhaust manifolds, and run a 2" pipe instead of a muffler and cat this was good for 143 rwhp, which is about 175 at the crank, no porting of the intake or heads was allowed... do basically this with a 2.5" exhaust and high flow muffler/cat, and you should be just 5 hp away, add a power pulley and that should just about get you there...
I posted the 'All Fired Up' article where they did dyno test a lot of these mods on a Fiero 2.8 no less. I've also listed this several times here after the many fights I used to have on here about how the stock computer can handle a big cam. Here it is one more time: You'll note that they got 15HP using a cam identical to the Crane 272 and also tested what a ported set of manifolds can do as well as open exhaust.
------------------
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12:31 PM
USFiero Member
Posts: 4879 From: Everywhere and Middle of Nowhere Registered: Mar 2002
Originally posted by will_p: Well in the "fieros all fired up" article all they did was blue print the engine, add a cam almost axactly the same as the h-272, port the exhaust manifolds, and run a 2" pipe instead of a muffler and cat this was good for 143 rwhp, which is about 175 at the crank, no porting of the intake or heads was allowed... do basically this with a 2.5" exhaust and high flow muffler/cat, and you should be just 5 hp away, add a power pulley and that should just about get you there...
Gotta check the article... those figures came from the engine dyno before the motor was put in the car. Herb noted that the stock motor put out about 10% LESS than the factory claims and he suggested maybe there was a difference in dynos. To get this back on topic, From what I gather you are trying to keep the motor stock looking and able to pass emissions. I don't know what the laws in CA are about NOS but I'd keep that in the back pocket as the 'nuclear option' if its' legal . Bottom line there is no replacement for displacement, right? So, stroking the 2.8 with 3.1 parts gets you some more volume. Using a 3.4 60° V6 (since the Fiero intake will fit it) is about as big as it gets without changing the appearance of the car (as if inspectors could tell.) You may want to consider getting a spare motor to build up as you drive what you have. Just call Summit, they'll hook you up with all the parts you could possibly swap out of those motors, and tell you if they are CARB approved (cams, roller rockers, catalytic converters, electronics) and the mentioned tweaking of the stock intake/throttle body along with the Borla exhaust and you'll end up with enough horsepower to make you happier. 180 HP? A fourteen second quarter mile? I'm sure more is available but I seriously doubt any number of bolt-ons is going to net you 50% more horsepower on the 2.8. Live with it. Oh, and then the rest of your car has to be up to snuff too.
------------------ John DuRette Custom 85 ; 87 Coupe in the driveway. "Kinda makes you nostalgic for a Members Only jacket"
[This message has been edited by USFiero (edited 04-27-2005).]
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02:54 PM
lou_dias Member
Posts: 5389 From: Warwick, RI Registered: Jun 2000
Dave, I thought the 272 cam had .427" intake and .454" exhaust, the cam they use looks more like the PAW cam I intend to use on my next build up. Performance Automotive Warehouse (PAW) lists a v6 60 degree cam with 280/290 intake/exhaust duration and .443" intake lift and .465" exhaust lift. Can someone plug this into some software to tell me my idle quality and where this cam will make power? I'm a little worried about the duration... This may be too much cam for a street car... I also intend to use roller tipped rocker arms but probably will stick with the 1.52 ratio of the Competion Cams rockers.
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07:37 PM
PFF
System Bot
Oreif Member
Posts: 16460 From: Schaumburg, IL Registered: Jan 2000
Dave, I thought the 272 cam had .427" intake and .454" exhaust, the cam they use looks more like the PAW cam I intend to use on my next build up. Performance Automotive Warehouse (PAW) lists a v6 60 degree cam with 280/290 intake/exhaust duration and .443" intake lift and .465" exhaust lift. Can someone plug this into some software to tell me my idle quality and where this cam will make power? I'm a little worried about the duration... This may be too much cam for a street car... I also intend to use roller tipped rocker arms but probably will stick with the 1.52 ratio of the Competion Cams rockers.
The .427/.454 is the H260 cam and the .454/.480 is the H272. As for idle, You should be fine. With the H272 cam there is a slight lope at idle but it is very small. Probably would feel it more with an auto trans than a manual trans but still very streetable. The PAW cam sounds like it will do fine. With the higher lift cams and the original MAP sensor you might have a slight hunt at idle. If you do, Just get a new MAP sensor from GM. The newer replacement ones (Original MAP's have been discontinued.) work better with the slightly lower vacuum at idle. The reason being the original MAP's don't read the slightly lower vacuum real well so the ECM switches the idle control between the MAP and the TPS leading to the "hunting idle". The new replacement MAP's don't have this problem.
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08:13 PM
lou_dias Member
Posts: 5389 From: Warwick, RI Registered: Jun 2000
Originally posted by USFiero: 180 HP? A fourteen second quarter mile? I'm sure more is available but I seriously doubt any number of bolt-ons is going to net you 50% more horsepower on the 2.8. Live with it. Oh, and then the rest of your car has to be up to snuff too.
I'm not looking for 50% more power. I'm looking for 40 more crank hp.
40/140 = 28.5%
I think 28.5% more power is reasonable and falls within the .8-1.2 hp/ci range for reliable power.
I will be replacing my engine mounts with poly mounts within the next two weeks. Once that is done, I will be heading to the track to get a baseline 1/4 time before I start adding more things to my car.
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09:03 PM
USFiero Member
Posts: 4879 From: Everywhere and Middle of Nowhere Registered: Mar 2002
Originally posted by Doug85GT: I'm not looking for 50% more power. I'm looking for 40 more crank hp. 40/140 = 28.5% I think 28.5% more power is reasonable and falls within the .8-1.2 hp/ci range for reliable power.
Reality is a harsh mistress. Really your stock motor is probably making something in the 125 hp range (doesn't matter what is printed on the sticker) half of 125 is 62.5+125= 187.5 yeah I rounded up, but I did that to point out the unlikely ability to make outrageous horspower gains without some serious engine mods.
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09:50 PM
Doug85GT Member
Posts: 9970 From: Sacramento CA USA Registered: May 2003
Reality is a harsh mistress. Really your stock motor is probably making something in the 125 hp range (doesn't matter what is printed on the sticker) half of 125 is 62.5+125= 187.5 yeah I rounded up, but I did that to point out the unlikely ability to make outrageous horspower gains without some serious engine mods.
You are basing your numbers on what?
Sorry, but a 125 hp engine doesn't make 110-115 rwhp stock.
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09:57 PM
Oreif Member
Posts: 16460 From: Schaumburg, IL Registered: Jan 2000
on my last car, I used to 305 v8 map sensor...seemed smoother...
Actually, The same MAP sensor is the replacement for the 2.8L now. If you look up the part number for the V-8 MAP and the replacement for the Fiero V-6 MAP they are the same now.
quote
Originally posted by 99 forumla:
whats the diff in the 2 map sensors?, that may be a good cheap fix for some problems.
The new version has a wider range since it's used on different engines and provides a more accurate reading to the ECM.
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11:27 PM
Oreif Member
Posts: 16460 From: Schaumburg, IL Registered: Jan 2000
Reality is a harsh mistress. Really your stock motor is probably making something in the 125 hp range (doesn't matter what is printed on the sticker)
The 140hp rating is an average of the Fiero 2.8L. On mass produced engines there is up to a 5% variance. So the 2.8L being rated at 140hp means a stock 2.8L could have anywhere from 133hp to 147hp. Going by RWHP of those that have dyno'd their stock V-6's the range seems to be 109rwhp-119rwhp which equals around 135hp to 144hp at the crank. Not to mention that Doug had the engine rebuilt so there is minimal wear. 125hp would be a high mileage uncared for engine.
so if i went to a junk yard to find the "new" map sensor what vehicle would we be looking for to take one from?, how does a map sensor affect drivabuilty? i reallty dont know exactly what 1 does.
But not 2.8 charts....
