Quote: How free flowing is your exhaust 3" with X pipe??
Your sure your not sucking oil past the intake gasket a little oil will make it detonate like crazy!
Good points. I have a 2.5" exhaust system with Flowmasters and tailpipes. NO H or X pipe. I've thought of stepping up to a 3" system.
I did see a bit of oil laying in the valley pan. I had some there at times with the 509 cam in place. I never thought that could be a problem sine I don't see any oil smoke coming from the car. I used Permatex on the intake bolts as usual, so I'm unsure of where it is getting there. Maybe I should pull the intake and valley pan to reseal it?
