RE: best muffler for a super tiger .90
I just tried bolting my Jett muffler onto the engine..and..
1) I have a vmar F4 phantom.. I need an 1/4" extension, which I have but the jett muffler uses larger diameter bolts, so you will need to
a) either drill out the holes bigger in the casting from the head
b) get longer screws of the same diameter as the stock ST ones and secure with nuts.
I'm planning on some tach tests later today
1) standard muffler
2) jett stream muffler
3) mac's tuned pipe
the mac's pipe will have to be tuned in, but I might run out of time on that one