[samantha]

Checked the kinsler & Muffler, I have the Hushpower R mufflers after the header which have a stainless cone ending at a point, this should catch the bits. I can only think that the bits have vaporised in the heat. My headers are wrapped & I know the glass wadding melts in the mufflers, so I guess around 1500 centigrade will occur inside the system. the car was dynod & a detonation detector was used when dynoing the engine.

would a dodgy batch of fuel cause this? as after a fuel fill pinking was noticed when i exelerated in 6th. a few weeks ago.