MS3X Running lean need advice Ford 302

[craigibc]

MSEXTRA,

I got the car idling pretty good and went though the basic tune with TunerStudio. When I put any pedal into it is seems to be running pretty lean. Lean to the point where it is trying to stall. I think I have the fuel regulator around 60 right now. Can you check out my tune and see if I am doing something wrong in the tune that is causing this problem. I can run the car and upload a data log as well.

Otherwise it may be a fuel system issue.

Thank for your advice!

Craig

[Matt Cramer]

The tune does not exist in a vacuum - if you could post a data log, that would give a better idea of how the tune interacts with the engine.

[craigibc]

Matt,

Attached is a data log from this morning. I know that I have issues with my idle control not working correctly and that is being fixed later today. The cars seems to lean out. Please give me your insight!

Craig

[elaw]

What makes you think it's running lean? The highest lambda I see in that log is 0.912 which represents an AFR of about 13.4, and it's usually sitting around the 11.5-12.5 area which is pretty rich for low load. Do you have a wideband EGO sensor and is it calibrated properly?

Other than that I'd say you just need to do some tuning. Your VE table is a mess in the idle area - the variation in the values in the cells between 45 and 65% load and 500-1100 RPM is huge.