knock retard woo's:(
#31
Senior Member
True Car Nut
Reader'* Digest version is that the new exhaust manifold on the front (Powerlog) is more efficient at removing exhaust, causing the front 3 cylinders to flow better and run leaner than the rear 3 cylinders. He needs 2% more fuel to the front cylinders to battle this condition and even out the air/fuel ratio in all 6 cylinders. Then the tune he applies in the PCM will affect all the cylinders in the desired manner because they're all burning the same A/F ratio.
#32
Junior Member
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And after he does all that, he can start troubleshooting any KR that remains.
Discussing and troubleshooting KR on a car with a powerlog and no skew is pretty much pointless. It'* a known issue.
Discussing and troubleshooting KR on a car with a powerlog and no skew is pretty much pointless. It'* a known issue.
#35
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NO. Absolutely NOT. You're not ANYwhere near outflowing the stock injectors. You need to have your current PCM skewed for the front three injectors. Fix the car instead of introducing more variables.
Fix the KR via skew FIRST. Before anything else. Get the other KNOWN bugs in that PCM fixed at the same time. Don't do anything else until you do.
Fix the KR via skew FIRST. Before anything else. Get the other KNOWN bugs in that PCM fixed at the same time. Don't do anything else until you do.
#36
Senior Member
True Car Nut
Thread Starter
Originally Posted by willwren
NO. Absolutely NOT. You're not ANYwhere near outflowing the stock injectors. You need to have your current PCM skewed for the front three injectors. Fix the car instead of introducing more variables.
Fix the KR via skew FIRST. Before anything else. Get the other KNOWN bugs in that PCM fixed at the same time. Don't do anything else until you do.
Fix the KR via skew FIRST. Before anything else. Get the other KNOWN bugs in that PCM fixed at the same time. Don't do anything else until you do.
#37
Junior Member
Posts like a Ricer Type-R
You have to remember there'* alot of guys here running 3.2" pulleys, headers, rockers, cams, etc. and are STILL running stock fuel pumps, FPR'*, and injectors.
#1 rule, don't introduce ANY other changes until you get it FIXED first, or we'll all be chasing our tails with you trying to nail this down. Nail it down as it sits, then we'll move forward from there.
#1 rule, don't introduce ANY other changes until you get it FIXED first, or we'll all be chasing our tails with you trying to nail this down. Nail it down as it sits, then we'll move forward from there.
#38
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True Car Nut
Thread Starter
Originally Posted by willwren
You have to remember there'* alot of guys here running 3.2" pulleys, headers, rockers, cams, etc. and are STILL running stock fuel pumps, FPR'*, and injectors.
#1 rule, don't introduce ANY other changes until you get it FIXED first, or we'll all be chasing our tails with you trying to nail this down. Nail it down as it sits, then we'll move forward from there.
#1 rule, don't introduce ANY other changes until you get it FIXED first, or we'll all be chasing our tails with you trying to nail this down. Nail it down as it sits, then we'll move forward from there.
#39
Senior Member
True Car Nut
Originally Posted by willwren
You have to remember there'* alot of guys here running 3.2" pulleys, headers, rockers, cams, etc. and are STILL running stock fuel pumps, FPR'*, and injectors.
#1 rule, don't introduce ANY other changes until you get it FIXED first, or we'll all be chasing our tails with you trying to nail this down. Nail it down as it sits, then we'll move forward from there.
#1 rule, don't introduce ANY other changes until you get it FIXED first, or we'll all be chasing our tails with you trying to nail this down. Nail it down as it sits, then we'll move forward from there.
My '99 GT is a SOLID 12 second car, with traction it would be an 11 second car, and I am still on stock L67 injectors, and a weaker fuel pump than the supercharged guys.
#40
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Join Date: Jul 2003
Location: Westerville, Ohio 2000 Black SSEi
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Originally Posted by dbtk2
If your fuel trim is at -3.2 and you go WOT, it will lock in on -3.2 and will pull 3.2% fuel throughout your whole WOT run. This is obviously not good and can cause KR. This is the best way I can think to word it anyways. This can also cause inconsistant 02 readings from run to run and track passes and whatnot because one run it might be adding 5% fuel and the next one it might be pulling 5%.
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