[Ant]

Craig,

I was using the large Supertrapp Muffler and diffuser plate packs, I think there was at least 20 plates, or whatever they came with! there was some sort of perforation inside the mufflers and some of the glass pack left, but it might have been mostly gone, having said that I removed four of the diffuser plates and that solved the problem. Unfortunately I haven't got accurate readings of the car.

Have you had anything to do with Flowmaster race mufflers?