I installed headers a while back. Never got a chance to log much due to a messed up laptop. Today I logged a bit more and found that I have KR randomly throughout the RPM range but more noticeably after 4700 RPMs. My headers hit on the bottom of the car sometimes so I'm thinking its causing false knock. It varies from .2 to 3.4 degrees of knock. I doubt putting 100 octane will help this. My 02s are around 910-920 at WOT so I know I'm not running lean. I can't audibly hear the knock either. Any input? Think it will go away when I get my banging prob fixed? Mods are in sig.

 

Come on, somebody? Input?