I had a extra head pipe for my M8 engine so got busy today and gutted it,just ordered some heat wrap for it hope this will cut down on some of the heat.Cant do a tune yet still have 1 1/2 years on extended warranty,but that will be next.Heard some where about some one heat wrapping a head pipe that had not been gutted and it cracked,so with out the cat i should be fine,if it breaks i will let you know.