I'm using DIS right now. I converted from Fiero ECM and intake to DIS w/'7730 + Trueleo intake.
For the record, this was on a "safe" Darth tune, pig rich and before I figured out I wasn't running enough octane. This is where I'm going tomorrow with my own tune and plenty of octane. Although I am going from 255/40/16x8 to 275/40/17x9 tires/wheels...
[This message has been edited by lou_dias (edited 07-17-2013).]
Blacktree
JUL 17, 07:17 AM
Wait a minute... you're still using the stock 3400 camshaft? You really need to fix that, ASAP!
La fiera
JUL 17, 07:25 AM
quote
Originally posted by lou_dias:
For the record, this was on a "safe" Darth tune, pig rich and before I figured out I wasn't running enough octane. This is where I'm going tomorrow with my own tune and plenty of octane.
I've always used 93 octane in every dyno session and track session. Last track day I used 112 and that engine was singing! She loved it. I could tell the difference in responsiveness and crispy clean RPM.
lou_dias
JUL 17, 08:16 AM
quote
Originally posted by Blacktree:
Wait a minute... you're still using the stock 3400 camshaft? You really need to fix that, ASAP!
Yep. That issue won't be tackled until after this racing season... Remember, I have told people that just switching to the 3400 block was a huge free cam upgrade over 95% of the available non-roller cams for Fieros... Also remember that Fiero engines (iron heads) are generally limited to .510" lift where as the dished pistons of AL heads allow for higher lift. With the domed shape of the 3.4 TDC pistons I'm using, I may be limited below .510" lift...
[This message has been edited by lou_dias (edited 07-17-2013).]
lou_dias
JUL 17, 08:19 AM
quote
Originally posted by La fiera:
I've always used 93 octane in every dyno session and track session. Last track day I used 112 and that engine was singing! She loved it. I could tell the difference in responsiveness and crispy clean RPM.
What compression ratio are you running? I'm at 9.9x:1 ... I didn't have very advanced timing on the graph that reads 158/195. Rich and with poor timing and not enough octane...pinging like a mo-fo. The dyno I hopefully get to do today will be a nice comparison since it's the same dyno shop.
lou_dias
JUL 17, 05:36 PM
New graph should be posted tomorrow...
Well today's run was 164.6/203...basically the 6 hp /8 torque gain is the difference in the power pulley and my tuning is doing nothing. I'm suspecting my injector voltages need to be tweaked for the Mustang injectors. It's still way too rich. My a/f didn't change much other than lean out a bit too much after 4400 rpm... Dyno operator thinks I can gain another 8 hp if I can get the a/f correct.
Peak torque looks to be 3750 and peak hp 4800... Quite different than the other dyno...however my retune did put me to lean after 4400 rpm...
[This message has been edited by lou_dias (edited 07-17-2013).]
sleevePAPA
JUL 17, 09:16 PM
quote
Originally posted by lou_dias:
. I'm suspecting my injector voltages need to be tweaked for the Mustang injectors.
are they bosch III 19#ers? if so I can give you the table im using.
La fiera
JUL 17, 10:38 PM
quote
Originally posted by lou_dias:
What compression ratio are you running? I'm at 9.9x:1 ... I didn't have very advanced timing on the graph that reads 158/195. Rich and with poor timing and not enough octane...pinging like a mo-fo. The dyno I hopefully get to do today will be a nice comparison since it's the same dyno shop.
I don't remember but I shaved the block .005 an the head was also shaved. Using stock bottom end with a .040 over bore replacement pistons.. I don't run high octane because of compression, I run it because unlike the kind of racing you do, I run for at lest 20 minutes on full power under extreme conditions and very high track temperatures.
lou_dias
JUL 17, 11:24 PM
quote
Originally posted by sleevePAPA: are they bosch III 19#ers? if so I can give you the table im using.
Nope. Bone stock Mustang orange pintle injectors. Throttle gets mashed and my a/f ratio drops to 10:1 even though I have it set for 14:1 down low...
[This message has been edited by lou_dias (edited 07-17-2013).]
lou_dias
JUL 18, 08:21 AM
I forgot my dyno sheet at home today...
I wonder if by posting 3 dynos from 3 different shops if anyone's learned anything about dynos yet... FYI under 10:1 compression, a motor will not produce more than 1 ft*lbs per cubic inch. I'd most likely have posted something like 202/249 right now on the dyno I originally did 187/249, (so @Carbon: take your 275/249 3500 dyno with the same grain of salt you take my 187/249 dyno...and my 149/167 dyno) . It all depends on the calibration. Dynojets are 'fairly' standard. Mustang dynos are wildly different. You can't compare 2 cars on 2 different dynos. This is why track times are king and dynos are just for tuning. Dynos are RELATIVE.
To give everyone a better idea of how much power I'm making, I'd have to bring my stock Formula to the shop and see what power it produces on THAT dyno. At that point I'd just be throwing money away to satisfy trolls.. I'd also have to take time off from work again since other than the 'low' dyno shop, these other shops are M-F/9-5 shops.
[This message has been edited by lou_dias (edited 07-18-2013).]
