Gentlemen, you've got my attention!! If there is one thing I know, it is motorcycles,(been riding and racing them for 30+ years). A So-Cal company called FMF markets a "power bomb" exhaust system for 4-stroke m/cycles. Looking at it reminds you of a snake that swollowed a rat. At about 12" after the pipe begins, a larger diameter section about 4-6" long happens, then it goes back to the original pipe size all the way back to the muffler. I have no idea how this technecaly works, but FMF pipes do create some serious power. It only seems logical that a similar setup would work on an I-6 using a single pipe exhaust system. Do any of you technical/engineer types have any thoughts on this line of thinking??
