High LTFT even after alot of tunning?
Thread Starter
TECH Apprentice
Joined: Aug 2002
Posts: 377
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From: Anderson IN
High LTFT even after alot of tunning? I have had edit now for about 3 weeks and have been trying to get my car to run right after cam and converter install. I have a lingenfelter GT1 cam 218/229 560/560 113 lsa plus crane 1.8 rockers. I know the valve lift is about .592, i cannot get my LTFT down they stay very high in positive numbers. I have scalled the ve table down and bumped up the high octane table and low octane table. The car seems to run better but still seems to be running rich and leaving alot of power on the table. I have no cats and have turned of the cot and i think i deleted all the codes for the rear 02s but not real sure all of the codes just associated with the rears. If anyone has any ideas how i could get these down i would greatly appreciate it.
Thanks
Nathan
Thanks
Nathan
Thread Starter
TECH Apprentice
Joined: Aug 2002
Posts: 377
Likes: 0
From: Anderson IN
Re: High LTFT even after alot of tunning? I bumped the IFR table up one time because i was told if you go up on the numbers it tricks the pcm into thinking the injectors are bigger. The car seemed to run alot worse after that, but it did not make sense to me to bump it up. Should i try to scale down the IFR table?
Re: High LTFT even after alot of tunning? Until you get your Ltrims negative,don't use the terms lean or rich. That causes confusion.
If your ltrims are positive, reduce the IFR values until you get the trims neg.
You can then work on WOT AFR and make it richer or leaner.
If your ltrims are positive, reduce the IFR values until you get the trims neg.
You can then work on WOT AFR and make it richer or leaner.
