![]() |
|
![]() |
![]()
Post
#1
|
|
Advanced Member ![]() ![]() Group: Advanced Members Posts: 495 Joined: 24-December 03 Member No.: 28 ![]() |
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) |
|
|
![]() |
![]()
Post
#2
|
|
Advanced Member ![]() ![]() Group: Advanced Members Posts: 495 Joined: 24-December 03 Member No.: 28 ![]() |
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. |
|
|
![]() ![]() |
Lo-Fi Version | Time is now: 29th May 2025 - 09:09 PM |