Ok, So we just got done installing 2.1L and we're running Tephra V7. GS2 cams, twin walbro 255's, fic 2150's injectors, ams fuel rail and a 4 port boost solenoid, egr block off and tuning it on e85. Still running stock throttle body and intake mani.

Heres my problem. My low fuel trims are bottomed out at -25. My mids are perfect. I have my injectors scaled at 1624 and my latency's are
3.00
1.488
0.936
0.672
0.528
0.408
0.36

I've tried adjusting latency up and down. things only get worse. So then I decided maybe with the big cams the stock throttle body wasn't allowing enough air. I adjusted the BISS screw to try to attain more air. No help. The throttle is adjusted at 15.24%. AFRs are 13 and lower. I would say AFRs get more desirable when load reaches around 80-100. Maybe even 70. Fuel pressure at idle is 48-52lbs.

So my next thought is that the stock throttle body isn't allowing near enough air and we need to spend the money for a bigger one.

Any thoughts?

Also Idling my load is at 50.....

Any ideas will help!! :P thanks!

 

both of your pumps wired to run at the same time?

 

Yes they are. But the t-fitting has been drilled.

 

Welp looks like I need to download the min IPW patch.... Good ol stock ecu's. I'll post back.

 

Ok. So for a 2.1L on e85 with GS2 cams and FIC 2150's. It looks like injector scaling john bradley's scalings of 1624 and his latency's worked for me. BUT if you running pig rich at idle and up to like 3 grand mysteriously you need IPW patch and I put my min ipw at 1.112ms.

Looks Like its going to work nicely.

 

I'm having rich issues with the same settup on pump.I used the same numbers John Bradley reccommended 1624 scaling.Car runs decent on mid trims but -12 at idle.I tried scaling 1720 but car almost shuts down at idle.Trims go to 0 when 3/4 throttle. Any suggetions.Afrs at idle are 11.3-11.5