Alright well Finished the headers and catback yesterday and today took it for a ride. This is so weird it seems liek there is a vibration/rubbing sound when I accelerate. This happens not every time but very frequently, especially in gears 1, 2, and 3. Im not sure what this is. I dont think that the driveshaft is rubbing against anything though. I had a new clutch and flywheel put in about a month ago if that means anything. Please advise me on what to do here I have looked everything over.