ltrim reading ????
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From: the not so stock tribe
ltrim reading ???? could someone tell me the proper way to get l-trims?? should i drive on the highway for a while or city driving, or both??
how long should i do this to get an acurate reading??
what are normal values for ltrims at idle? at highway driving at a steady speed???
how long should i do this to get an acurate reading??
what are normal values for ltrims at idle? at highway driving at a steady speed???
Launching!
Joined: Dec 2001
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From: Albuquerque, New Mexico
Re: ltrim reading ???? I find it best to drive around the city for about 10-15 minutes, with maybe a quick spurt on the freeway. Try to find some hills to go up, and do some "spirited driving" but not wide open throttle. Also use as little idle and decelleration as you can. In other words, try to get your PCM to use as many fuel trim cells as possible. Do not use idle, de-celeration or WOT cells in your average. Good Luck
Thread Starter
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From: the not so stock tribe
Re: ltrim reading ???? thanks vettpartz,
what cells are you talking about???
i use an EASE scanner, so i don't think it shows the cells. it does however have an "Ltrim Avg." reading, right after ltrim reading. would that count??
what cells are you talking about???
i use an EASE scanner, so i don't think it shows the cells. it does however have an "Ltrim Avg." reading, right after ltrim reading. would that count??
Launching!
Joined: Dec 2001
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From: Albuquerque, New Mexico
Re: ltrim reading ???? I also use the EASE. There is a parameter in there called "Fuel Trim Cell" which I always monitor. After a logged run, I only use values obtained in cells 1-16. Average the amounts in "LONGFT1" for the left bank, and from "LONGFT2" for the right bank. Good Luck
