Quote Originally Posted by 99PontiacGTP View Post
leave a stock T-stat then. Specter works fine... K&N can sometimes screw up MAF sensors(the oils).
The K&N CAN mess it up if you don't properly maintain your car and filter. The MAF needs cleaned every so often. I've had one two years, and no issues at all. And keep the stock 195* thermostat, otherwise you will be wasting money for no reason on fuel. The 180* is a patch to help prevent KR, but you shouldn't rely on the t-stat to lower KR.