Higher idle and odd AFRs after track day
Oct 5, 2011, 12:35 AM
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Higher idle and odd AFRs after track day
Hey guys,
Hoping you can assist me on this one. I just completed a track day and noticed now the car has done some funny things. The idle has increased by around 200 rpm and the AFRs are running richer on idle by 1 - 1.5 points (fluctuates and doesnt hold steady) and on cruise, it has gone a little leaner by around 1 - 1.5 points.
Before the track day, everything was fine. I flashed some older maps onto the car and that still didnt resolve the issue.
No CELs were thrown, and the car is still full time open loop tuned.
Thoughts are Exhaust leak pre wideband? But hopefully you guys can shed some light.
Thanks in advance!
Hoping you can assist me on this one. I just completed a track day and noticed now the car has done some funny things. The idle has increased by around 200 rpm and the AFRs are running richer on idle by 1 - 1.5 points (fluctuates and doesnt hold steady) and on cruise, it has gone a little leaner by around 1 - 1.5 points.
Before the track day, everything was fine. I flashed some older maps onto the car and that still didnt resolve the issue.
No CELs were thrown, and the car is still full time open loop tuned.
Thoughts are Exhaust leak pre wideband? But hopefully you guys can shed some light.
Thanks in advance!
Oct 5, 2011, 03:17 AM
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Just did a thorough check over the exhaust system for any leaks etc and none to be seen... Any other ideas? Would the wideband sensor die from all the heat from tracking it ?
Oct 6, 2011, 03:01 AM
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The strange thing is, pushing the car under load, the AFR is fine...
Im going to go back to my original MAF scale as I know I adjusted it slightly when I was fine tuning my AFRs at cruise.
Im not going to touch the BISS as I know it can throw out the tune alot and you have to re-do everything... The car just doesnt seem to throw any symptoms of vaccum leaks though?
Im going to go back to my original MAF scale as I know I adjusted it slightly when I was fine tuning my AFRs at cruise.
Im not going to touch the BISS as I know it can throw out the tune alot and you have to re-do everything... The car just doesnt seem to throw any symptoms of vaccum leaks though?
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