Originally Posted by FLE39

Lean is not an issue for cats. They are a catylist. They only react to what is introduced. Rich, that will deff overheat and clog them.


As for the SAP. I'm glad I educated myself and found it and all. I am worried baout the check valve though. I may take it apart and see about cleaning it. Or price a new one. The SAP blows air into the exhaust system so the unburned carbons have a Oxygen supply and a chance to further burn off. Only works when the car is cold as about 10 minutes later when your Cat is up to temp the SAP is not required.