WOT - LTFT is ~+6??
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TECH Enthusiast
Joined: Apr 2003
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From: silver Spring MD
WOT - LTFT is ~+6?? Hi Folks
MY 02 SS has stock MAF, LS6 cam, ported LS6 heads (11.2:1), 36# injectors, SLP Long tube headers and cats. Modified the IFR table achieving a LTFT of -0.8 at idle and partial throttle of -4.7 B1 & -3.6 B2.
Well I did a WOT and the LTFT is +5.6 B1 & +6.7 B2.
Everything I read indicated it should be 0. What should I adjust to get LTFT to be 0 or close??
Thanks
Bill
MY 02 SS has stock MAF, LS6 cam, ported LS6 heads (11.2:1), 36# injectors, SLP Long tube headers and cats. Modified the IFR table achieving a LTFT of -0.8 at idle and partial throttle of -4.7 B1 & -3.6 B2.
Well I did a WOT and the LTFT is +5.6 B1 & +6.7 B2.
Everything I read indicated it should be 0. What should I adjust to get LTFT to be 0 or close??
Thanks
Bill
Your Ltrims look right for Part Throttle. How many miles did you give it to learn? 20-40 miles is about right to get a good idea of whats going on. Do you have a screen in your MAF?
The IFR table is the one you need to tweak...
Bill
The IFR table is the one you need to tweak...
Bill
Thread Starter
TECH Enthusiast
Joined: Apr 2003
Posts: 561
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From: silver Spring MD
Originally Posted by Billiumss
Your Ltrims look right for Part Throttle. How many miles did you give it to learn? 20-40 miles is about right to get a good idea of whats going on. Do you have a screen in your MAF?
The IFR table is the one you need to tweak...
Bill
The IFR table is the one you need to tweak...
Bill
The car has almost 100 miles on it and yes The MAF has a screen. If I tweaK the IFR table, what do I shot for? I was going for a part throttle of -4 which I think is close.
Bill
When you modify the IFR table you have to do the whole table. I did some logging on a few completely stock cars and found that the Ltrims are anywhere from 0 to -12 anywhere from idle to just normal crusing. They ALWAYS lock at "0" when you go WOT
I would multiply the whole table by 95%, the numbers will decrease in value. upload program and drive around for 20-30 miles.
By adjusting your IFR table, your WOT is going to be off, most likely you'll be really rich.
You also want to increase your COT by 5-10% since your running cats. Increase all values by 105-110%
I would multiply the whole table by 95%, the numbers will decrease in value. upload program and drive around for 20-30 miles.
By adjusting your IFR table, your WOT is going to be off, most likely you'll be really rich.
You also want to increase your COT by 5-10% since your running cats. Increase all values by 105-110%
Thread Starter
TECH Enthusiast
Joined: Apr 2003
Posts: 561
Likes: 0
From: silver Spring MD
Originally Posted by Billiumss
When you modify the IFR table you have to do the whole table. I did some logging on a few completely stock cars and found that the Ltrims are anywhere from 0 to -12 anywhere from idle to just normal crusing. They ALWAYS lock at "0" when you go WOT
I would multiply the whole table by 95%, the numbers will decrease in value. upload program and drive around for 20-30 miles.
By adjusting your IFR table, your WOT is going to be off, most likely you'll be really rich.
You also want to increase your COT by 5-10% since your running cats. Increase all values by 105-110%
I would multiply the whole table by 95%, the numbers will decrease in value. upload program and drive around for 20-30 miles.
By adjusting your IFR table, your WOT is going to be off, most likely you'll be really rich.
You also want to increase your COT by 5-10% since your running cats. Increase all values by 105-110%
Thanks I will give it a try - I appreciate the help.
Bill
