Quote Originally Posted by Impala ss sleeper View Post
Hey guys i have a 2005 impala l67 xp cam,headers,gen v with northstar tb,3.4 puley and my injector duty cycle was 125 at wot with stock injectors is that good?And i got 5*knock while shifting into gear then it would drop down to 2*
Any knock is bad even a few degrees. What tuning have you done and do you have someone who can tune the car for you?

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