Ecotec le5 Turbo 2.4 Build (Page 8/28)
dobey OCT 28, 09:39 PM

quote
Originally posted by 4thfiero:

hey! this is some good knowledge here. Where does one get these buffering circuits????? Any idea how many i would need? I know nothing about this process. What do you suggest i do/email my mechanic to "show" him HEY! you can use the stock guages!!!

Also, is there a way to use the stock gauges but "update" my speedo to go past 180kph, like maybe 200-300kph, can that be programmed and where can i find a stock speedo but higher numbers for the Fiero.

Lastly. Would u guys happen to know if there is an easy/good way so that the check engine light will still work on my dash if something goes wrong with my ecotec??? I was wondering about that.



http://www.dakotadigital.co...mode=prod/prd126.htm Should help with the speedo. They also have a a similar module for the tach signal. There should be signals coming out of the ECM for both, or you might be able to tap into the VSS directly and have it feed the ECM and the gauge.

I wouldn't bother with changing the speedometer to read that high. Without serious suspension and aero work, it's not really safe to be taking a Fiero to much over 200 km/h. You could possibly get a new face made that reads higher than that, but you need to make sure the odometer and speedo both read correctly, which can be a little difficult to do if the needle positioning doesn't match stock.

For the check engine light, it's just a matter of wiring it up. Typically it's just a wire going to the ECM which gets pulled to ground. All you need to do is verify which pin at the ECM does that, and that it pulls to ground (you don't want to have the other end of the wire on +12v if it's not).
4thfiero OCT 28, 11:10 PM
Awesome! Thanks for that information. I'll take that to my mechanic!

Yeah i did modify the aero of the car with a new body kit and spoiler for the higher speeds. I havn't done the suspension yet but that is on the list, i was hoping to do full coilover mod, tubular suspension with the koni red kit in the rear and QA1 coilover for the front. Im also still deciding on the wheels/offset/width of the Fiero. I really want Watanabe wheels with a BIT of a deep dish look. Or get custom suspension made (custom offset) by arrat motorsports with the offset i need to accommodate the new wheels. Ialready emailed them about it, they can make it. But of course $$$$...I will probably wait on that. I need more information to move forward.

But the coil over kit will def happen in the near future. Im hoping for the new wheels and suspension next summer.
4thfiero OCT 28, 11:19 PM
Also here is a pic of my Fiero...Custom front bumper, the intercooler and black mesh are obv not installed yet. But you get the Idea...Can't see the raised stock spoiler or RX7 tail lights either, i dont have pics yet

dobey OCT 29, 09:30 AM
You need a lot more than a bumper and a raised spoiler to go 300 km/h in a Fiero. Those mods aren't going to make it happen.

It will still only be safe to about 200-210 km/h, assuming good suspension, roads, and driver ability.
jediperk OCT 29, 12:36 PM

quote
Originally posted by dobey:


I wouldn't bother with changing the speedometer to read that high. Without serious suspension and aero work, it's not really safe to be taking a Fiero to much over 200 km/h.




That is some really good advice...
jediperk OCT 29, 12:42 PM
Is the heat extractor built into the hood functional? It looks like it is too far back on the hood from your pic and its functionality is probably the most important factor in giving you the down force you need to reach the speeds you are talking about semi-safely...
dobey OCT 29, 01:33 PM

quote
Originally posted by jediperk:

Is the heat extractor built into the hood functional? It looks like it is too far back on the hood from your pic and its functionality is probably the most important factor in giving you the down force you need to reach the speeds you are talking about semi-safely...



Unless the plastic pan for the spare tire was removed, I'd guess not. That vent is pretty far back indeed. But even with a proper functioning hood vent, it's not enough for a 200 MPH (300 km/h) Fiero. Just look at all the aero work done on the C6 ZR1 and C7 Z06. A lot of little things all over the car to improve stability and reduce drag. The rear hatch on the Corvette helps a lot at high speed.
4thfiero OCT 29, 03:29 PM
I know guys i know, Im not done the aero work yet. Thats just a pic to show whats its mainly gonna look like, I still have to install the front spoiler and other stuff that will help take her too 300kph, some stuff i probably dont know yet, thats just a future dream. the hood vent IS functional, it is far back but has a....i dont know what u would call it...a tube or plastic piece that is wide but skinny that goes past the front bulkhead and into the radiator area to let out heat. I used to have fire bird vents in between the headlights for the same purpose, but i removed them for this one. Im taking the design off what i think is really cool looking rx7 and doing my best to make it work for a Fiero.



Of course the 200mph/300kph dream is out there, my main concern right now is getting her running and driving...but since im dealing with the Speedo stuff now, i thought...why not address this now so i dont have too later. And if i dont get her prepped for 300 kph? whatever, i still got a cool speedo.

jediperk OCT 29, 03:45 PM
I don't think he is going for that much speed (200mph). For that much speed you would need a chassis stretch to add about a foot of wheel space. I was thinking he was going for 130-140 mph. Having spent six years in Germany blasting down the autobahn at up to 160 mph, I can tell you that in most every car at 120 mph is where the fun begins and you start feeling the affects of the atmosphere. You can really start to tell how well a cars aerodynamics are at speeds above 120 mph. My Cobalt SS was so much smoother than my Mustang GT. The atmospheric buffering was a lot worse in the Mustang.

Well, I was writing this as he posted that last post. I guess he is going for "Ludicrous Speed"

[This message has been edited by jediperk (edited 10-29-2014).]

4thfiero OCT 29, 04:25 PM
LOL...ah space balls...

In a perfect world, i would like to take my car to the Wangan Highway in Japan if only once and try for 300kph, that probably wont happen, but hey? i can dream right?