[slammedGP]

Judging by the mods in your sig, you should be seeing no KR. Headers help greatly, most of the time they will reduce it fully. To accurately see how much KR you are getting, you need to do a WOT run from a dead stop. If you go from a roll, torque management will give you false readings. If you still have stock gearing, at 90mph, the car will be just about to shift into 3rd, and will be at about 5500-6000rpm. You need to find out if the KR is occuring at higher rpms, or right at the shift point. If the KR occurs right at the shift, chances are it is also torque management. Torque management is the PCMs way of protecting the tranny. It will retard the timing at shift points a few degrees to help the transmission from going out early. So, if the knock you are seeing is at, or right before the shift, and it is only a spike for a quick second, it is torque management, and there is nothing you can do about it unless you have a Powertuner and feel like tuning it out. I know ZZP rewrites the TM tables, but they don't get rid of it fully. If the knock isn't spiking and is there at the higher rpms, then it is actual knock and more supporting mods like rockers or a cam or an intercooler are the only way to kill it.

You can test for TM by adding race fuel (110 octane) and running the car WOT from a stop. If you see the same spike of KR, it is TM. Good Luck.