I'm still having 12-16 degrees of KR when leaving a stop at slow rates of speed (granny takeoff),but when accelerating quicker the rpm move through the KR zone (1400-2500) sometimes only causing up to 3*KR.
While travel at 78 mph,KR will occasionally pull 12-16 of timing.
The weird thing is when trying to duplicate the problem area at low speeds,I can't always get the KR,this intermittent issue makes me wonder if the pcm is
causing false knock.PCM was re-flashed at dealer a couple of months ago,but the KR is gradually pulling more timing at lower rpm in previous weeks.
Knock sensors have been replaced,and I've ran three different knock modules in the PCM that made no difference.Car runs healthy at WOT without KR.
'97' GP GT is n/a with 513 lift Comp cam,105 lb springs,ported heads and LIM.
Anyone else know of a solution to this problem?
Having to run stock tune at moment until funds become available.
