ORIGINAL: Ed Cregger
Some people just enjoy chewing the fat, Pe.
It would seem logical that if the original dimensioned piece of a muffler that allegedly provides a boost over stock mufflers was replaced with a longer unit, it would, indeed, lower the frequency of the alleged boost. But, alas, as Pe has indicated, logic and theory only go so far. It is time to buy the part and give it a try.
Ed Cregger
I can see it now: "Darn, it's too long for this prop. Lessee, I'll cut the expansion chamber a little shorter..."
CR