Looks like my last post about the muffler and exhaust has drawn some interest..
I’ve been asked for more info about the muffler. Well here is the skinny:
Since the entire tubing is all stainless (this stuff was pricey) I figured the muffler should be stainless also. The tubing is all 2.75″ and the muffler is stainless too. This bad boy came from Speedway Motors and is called a “bullet muffler” (CLICK HERE for more info). They have several options on finish. Mine is the “non-polished” version.
Something to keep in mind: as nice as this muffler is, it is not quite enough to tame the Ecotec. When the VVT kicks in, the Ecotec really starts to wail. That is why we are running the Supertrapp tips at the end of the pipe. Speaking about the Supertrapps, I have been experimenting with the number of discs. With Supertrapps, the more discs you add the less restrictive the exhaust is, at the expense of noise. With less discs, it gets more muffled but backpressure increases. Right now, I am using 12 discs – six on each tip – and this puts one hell of a smile on my face past 4500 revs. I’ve ordered more stainless discs and plan to add at least two more per side. We shall see how they turn out.