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Thread: Tune problem 04 gto
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05-15-2008, 02:50 PM #1
- Join Date
- May 2008
- Location
- cleveland
- Posts
- 2
silver- 2004 gto
Tune problem 04 gto
First off, Ive been reading up on this forum for some time and there is a lot of good info on here and I hope someone can help me out. I have loaded the Diablo performance tune on my 04 gto. When I set my injector slope to -15 to get my LTFT to 0, It throws code bank 1 and 2 both running lean. Only mods include K&N intake, BBK 80mm TB, Weiand intake manifold, E3 plugs, MSD wires, Shorty headers and flowmaster cat back system. If I leave the tune as is LTFT 15 to 20 with no adjustments to injector slope no code no problem. Can anyone help me out!!!
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05-15-2008, 03:10 PM #2
Never used a Diablo before, but why would you be leaning the tune out when you clearly have mods supporting more airflow?
Have you put it on a wideband to see what your actual AFR is? Tuning by LTFTs can be a pain sometimes...
-Eagle
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05-15-2008, 03:36 PM #3
- Join Date
- May 2008
- Location
- cleveland
- Posts
- 2
silver- 2004 gto
tuner problem 04 gto
I was told going negetive on the LTFT's tells the computer to send more fuel because it thinks the injectors are smaller. they will set at 0 but the car will in turn be to lean. I was thinking about puttin this thing on a dyno for tuning
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05-15-2008, 11:45 PM #4
Going negative adds fuel. Your logic is accurate.
Check for air leaks everywhere. I had the same problem when I modified my MAF and was the system apart a lot. I checked every clamp from the filter to the intake and found the second clamp at my intake to be loose. (the one connecting the tubing to the intake) I use a touch of lock tight on each now to make sure nothing on the works itself free.
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05-16-2008, 08:15 AM #5
what are you ltft's before you make the adjustments?
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05-16-2008, 03:25 PM #6
realize that when you use that chainsaw for surgery, you are affecting ALL fueling, startup, OL, idle, cruise, and yes, WOT.
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