Quote:
Originally Posted by venik
you always say the car runs better with all trims at 81, I didn't even bother reinstalling my o2 sensors after putting new headers/o2 housings on. Would it be worth it to install 1 and get the trims to 81? that way I wouldnt be pulling fuel with the maftpro but the ecu. Which one does the ECU tune with, is it the front or rear?
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When I run with no O2s, I leave the trims at 100. When I am tuning with closed loop on, I tune so they run down to 81, and shoot for an O2 trim of 80 or so.
my problem is probably due to my lack of tuning knowledge, but unless I'm cruising on a flat road my AFR isn't 14.7-8. If I'm cruising up hill I can see as low as 12.5, and even while engine braking I see 12.5 and it starts to buck. It's like I tuned the car to cruise only.
My mainscale is at -60.5 which lets me basically not touch the low load tune, cruise(on flat ground) at 14.7-15.1:1, and casually accel at 13.2-13.6:1. But there is a point when casually acceling that if you press the throttle past it, the car says no and I will see like 11.5 afrs
Are the mid loads coming into play while going up hill? Does map enrichment effect anything besides tip in?
Should I be messing with the VE table? Should VE table #2 be working for me?(td05 headers, 16gs, o2 housings, downpipe, 3 inch all the way back)
I'm using 4.85 or something, I'm going to try 5.03 when I have time.
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5.03 is similar to 4.8x, tip-in is smoother. The decel limiter is cool, but unnecessary if you are doing a full VE tune.
MAP enrichment is only right during tip-in. Mid tuning is centered at 0psi boost, so light to moderate accel is definately Mid.
VE table 2 should be close for part throttle driving, as it is affected by cams and heads more than turbos at part throttle.
Bob