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[email protected] TX muscle cars.
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ok i have another thread going about my problem but now i have a question. does anyone know about where the pluse width and the long trim should be at like 70 mph, 75 degs.out mine is on bank one 3.2 pluse, and -9.4 give or take a little on the trim....at cruse and a flat and level road....i thought the trim was supose to be aroun 0 at cruse....my problem i am having is i am running rich sence i left the tuner, you can even smell it at the back of the car....so any opinions????
 

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your fuel trim should be somewhere around the +-4 area
-9.4 seems you're running a little rich in that area

What are you short term fuel trims?
 

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sounds like you're really rich then in that area.

I assume you're still in closed loop so you can't really be rich because your trims bring you back to 14.7, but they shouldn't have to work that hard.
 

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May I quote you on that?
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Injectors are easier to follow if you set the software up to read % duty cycle, which is based on pulse width. If you're doing your own tuning and have a wideband, there's really not much use for LTFT, which is easily disabled. It just gets in the way.
 

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May I quote you on that?
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2.7 is fine.
 
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