Help tuning w/MAFT
Thread Starter
Staging Lane
Joined: Feb 2002
Posts: 76
Likes: 0
From: Whitesboro, Tx.
Help tuning w/MAFT I have worked on this for about 3 weeks now and I feel my base is near perfect. My Ltrim are at an average of -0.9, thats with the MAFT set at +15. Now for my WOT I'm getting O2's with values from 860mv to 890mv for a average depending on how I sort the data. Its at 860mv if I look for only cell #22, its 872mv looking for cell #22 but TPS greater than 4.4 and its 890mv looking for only TPS greater than 4.4. The MAFT is set at zero for WOT at this time so whats the verdict? Thanks and as you can see I learn just slower than most. 
Thread Starter
Staging Lane
Joined: Feb 2002
Posts: 76
Likes: 0
From: Whitesboro, Tx.
Re: Help tuning w/MAFT Ok I've set the WOT to the number #1 position which should 2% richer. Car felt a bit sluggish so maybe being lean it wasn't as responsive as it should have been. I'll Atap later today and see what the data says. I'm getting there just trying to avoid a hole in the old piston top.
Thread Starter
Staging Lane
Joined: Feb 2002
Posts: 76
Likes: 0
From: Whitesboro, Tx.
Re: Help tuning w/MAFT Update after setting the WOT switch to 2% richer,the 02's now read an average of 891mv. I made two agressive runs and sorted the data from both. Timing is at 30.8 degrees with very little KR. One question would be that my Ltrim have gotten richer -4.3, is this normal or is it due to these both being WOT runs.
TECH Enthusiast
Joined: Jan 2003
Posts: 582
Likes: 0
From: Birmingham, AL
Re: Help tuning w/MAFT If you're getting very little KR, you need to leave it alone. 
Your A/F is probably near right where ti should be. Just my $0.02. My LTRIMS are around -1 to -5 while cruising.
Your A/F is probably near right where ti should be. Just my $0.02. My LTRIMS are around -1 to -5 while cruising. 
