Thanks for your reply, you were the only one who did! It turned out to not be a vacuum leak at all. Its oil getting up through the PCV valve and into the intake area. There are small pools of oil in there from this. Its causing detonation and the computer is compensating by retarding the timing so there is my power/torque loss. It goes in tomorrow for the fix. I will get more info as to how and why this is happening.The fix is an external oil catch, plus clean out all the oil and carbon build up. It was using more oil. Thanks again.