Quote:

here are the Sceptre stock inserts (about 24" long), the clean one is the new design




Is this photo taken with a very wide angle lens - because these appear to be cones - not tubes. But I'm guessing it's an optical illusion. Here I am thinking this is a muffler design I've not seen before (cone shaped perf) - then it dawned on me about the illusion.

You say the new gold pipe is smaller but in the photo it looks larger than the old one ???

I prefer the Gold sound. Why not try wrapping the perf with a layer of Stainless wool and then a layer of glass. That way you get the best of both worlds. The stainless wool closest to the perf minimizes the decay and blow-out of the glass and the glass absorbs more of the high frequencies. So you get a nice deep sound that doesn't need repacking as often as glass on its own.

Cheers, Richard
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09 America, Staintune Pipes, K&N, Breathe, Hagon Nitros, AI & O2 removed, tune 20184 (modified), MTX-L a/f gauge