do i add or subtract from the ve table to correct. i am at positive 9 wot but at 25 at cruise on the ltft

 

if trims are +5,then you would multiply that cells value by 1.05.I would do 1.04 to keep from overshooting!!Then log again.Very simple basic stuff
are you still running the MAF?

 

damnit man. i have to mail that pcm to you. ok, you say simple basic stuff. ok. i'm glad your the tuner and not me. i will have to call you to try and understand what you typed

 

pm me your number,I will call you late tommorrow night when I get home,which could be late.

 

I always multiply by the full percentage amount the first time, then multiply by half the next time, and then a third by half just to be sure.

 

If I'm right u don't check LTFT at WOT because u have some power enrichment or PE coming into play, if it's plus on the scan it means it's adding fuel so u have to add that much in the VE table, i always do it cell by cell, I think u check WOT on the o2 sensors microvolts. I think those need to be 850 -895 i 'm prolly wrong on that tho.

 

At WOT, you should be in open loop and not have any STFT or LTFT' adjusting the AFR.

 

If you have positive LTFTs they can and will get figured into your WOT power enrichment causing inconsistent fueling and you will not be hitting your target Lambda (afr).


Do not pay any attention to what the narrowband mv's are reading at WOT because I have seen some read in the 900-910 range and the car was pretty damn lean on the wideband.

 

As Charlie stated above, are you still running the MAF? If the MAF isn't calibrated after your Ve is dialed in, your trims have the potential to be off (even though your Ve table is spot on). Going into the Ve table to correct this after the MAF is re-enabled is chasing a ghost. Of course this is dependent on if you use the stock settings for Ve/MAF fueling balance.

 

I thought for trims
positive is 'trimming' that much fuel
negative is adding that much fuel