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> Bolt-on + heads LT1 Dyno, Running E85
kgkern01
post Jul 7 2008, 04:51 PM
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Mods in sig, just basic catback, cutout, CAI, Hooker Longtubes, but also 1.7 rockers and ported heads...and E85. Open Loop Tune

322 rwhp, 337 rwtq

(IMG:http://farm4.static.flickr.com/3175/2646686286_2082f041da.jpg)
The A/F was off on their dyno because I have a small leak where the y-pipe meets the catback pipe. My new LM1 was in my pass side collector, thus the reason I ran Open Loop. I read 11.6-11.8 A/F until the top when I read 12.0-12.2 (108% DC on the 30# SVO's).


Me on the dyno
(IMG:http://farm4.static.flickr.com/3110/2645856625_96eb235620.jpg)
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kgkern01
post Jul 10 2008, 12:14 AM
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Almost all cars made since either 1989 or 1990 can use ethanol, since that is when 10% ethanal in gas began being mandated in some areas in the US.
I did go with 30# SVO's, but they were hitting 85% DC at 4600 RPM and static (100%) just shy of 5200 RPM, so it went a little leaner after that. I had to tune the PCM for about 34% more fuel I believe by changing the injector constant and worked with VE Master in Speed Density mode, then swtiched back to MAF and fine tuned the MAF calibration by just a few %. I think if I can get an adjustable fuel pressure regulator and bump pressure to about 56 psi, that should put me where I need to be with fuel.

Changes made to car for E85 were, tuning the PCM, 30# SVO's, changed fuel filter after a few tanks, added a wideband to monitor and tune A/F ratios. That's about it.
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kgkern01   Bolt-on + heads LT1 Dyno   Jul 7 2008, 04:51 PM
killer_bluebird   Very Respectable numbers! Sounds like you ne...   Jul 8 2008, 05:21 AM
JustDSM   You'll need approx. 33% more fuel for E85 vs. ...   Jul 8 2008, 08:53 AM
y5e06   so, no other changes? stock tank (plastic or steel...   Jul 9 2008, 04:08 PM
kgkern01   Almost all cars made since either 1989 or 1990 can...   Jul 10 2008, 12:14 AM

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