Lean right after wide open throttle HPT
04-11-2009, 02:49 PM
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Lean right after wide open throttle HPT My car:
1997 Corvette
228/230 .588 .592 112 LSA
5.3L 60 CC heads 2.02 1.57
Patriot dual springs
Ti retainers
Hi Tek push rods
LS-6 intake
LG Street series headers, no cats
2004 PVC system with CCA catch can
78 mm throttle body non ported
3:42 gears, Yank SS 3200 stall
Trans cooler
Wideband
36lb injectors
So Ive been tuning my WOT with HP Tuners, via MAF and my AFR is getting pretty close. Right after I let off of the throttle from 100% it goes lean. Is this just all the air getting sucked away from my wideband or am I missing something? Attached is my tune and log.
Also, I know there is KR but I've pretty much decided it is false. I will confirm as soon as I crawl under my car and see if my exhaust is hitting. No matter how many times I take it out it returns in the same spot. Sometimes I will be cruising at the same speed, no change in throttle or anything and it just appears out of nowhere.
Thoughts?
1997 Corvette
228/230 .588 .592 112 LSA
5.3L 60 CC heads 2.02 1.57
Patriot dual springs
Ti retainers
Hi Tek push rods
LS-6 intake
LG Street series headers, no cats
2004 PVC system with CCA catch can
78 mm throttle body non ported
3:42 gears, Yank SS 3200 stall
Trans cooler
Wideband
36lb injectors
So Ive been tuning my WOT with HP Tuners, via MAF and my AFR is getting pretty close. Right after I let off of the throttle from 100% it goes lean. Is this just all the air getting sucked away from my wideband or am I missing something? Attached is my tune and log.
Also, I know there is KR but I've pretty much decided it is false. I will confirm as soon as I crawl under my car and see if my exhaust is hitting. No matter how many times I take it out it returns in the same spot. Sometimes I will be cruising at the same speed, no change in throttle or anything and it just appears out of nowhere.
Thoughts?
