I brought the 6 in for a minor idling issue. I have the K&N CAI, throttle body ground and the coolant bypass all done. Well I recieved a call that my car was done, they replaced the entire throttle body. Never said anything about the mods causing the problem. The best part of the entire thing is that when they put the new throttle body on they left the bypass alone and they even hooked the ground cable back up. They hooked it up on the bottom of the throttle body so its hidden and out of the way of anything, the only way youd ever know it was there is if you were looking for it. Thats all, I just wanted to share that.