Aight, so my freind put his new CTR pistons, and put the engine back together. It started fine, and of course he was releived. But now, the cars idle fluctuates and even sometimes shuts off cause it drops so low. Driving wise he said it feels fine, just the damn idle now. Anyone got an idea on what the problem could be? He cleaned the IAC valve, yet nothing changed. One person did mention to adjust the valves again, saying that would cause the problem. Thanks.