help...cant figure out misfire in upper RPM!
06-08-2007, 11:08 AM
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help...cant figure out misfire in upper RPM! well the car is a 99 trans am A4...the motor is a SLP ZL402 http://www.slponline.com/view_product.asp?P=12500MK
the heads and cam are the ones that are recommended for this motor by SLP....new timing chain (LS2 if i remember right)....Fast 90/90, stock MAF, SlP Lid, SLP longtubes and ORY, SLP loudmouth, 42lbs SVO greentops, mostly stock ignition, and it has been tuned at exotic performance plus (site sponsorer)..
OK! the problem is it runs great from idle all the way to 4800 rpm and it breaks up and pops to 5200 rpms.....im lost here...where should we look forthe problem? BTW it made 450hp to the wheels is that about right
the heads and cam are the ones that are recommended for this motor by SLP....new timing chain (LS2 if i remember right)....Fast 90/90, stock MAF, SlP Lid, SLP longtubes and ORY, SLP loudmouth, 42lbs SVO greentops, mostly stock ignition, and it has been tuned at exotic performance plus (site sponsorer)..
OK! the problem is it runs great from idle all the way to 4800 rpm and it breaks up and pops to 5200 rpms.....im lost here...where should we look forthe problem? BTW it made 450hp to the wheels is that about right
