I did the top swap myself, every sensor is hooked up, everything thats suppose to be. no check engine light, nothin. and the reason I haven't experienced any KR is because the car hasn't allowed itself to run on any real amount of boost, yet. as of right now I drive the car back and forth to college and it runs great, just putting around though. I just ordered a 3.4 pulley, slp longtubes, and I'm looking into an intercooler to pick up in the near future.