Do you think it drops off above 8000 due to the JEMCO chambers? When I ran the dyno pulls, mine did the same thing not too much over 8000.
Yes, it's the pipe. If you want a higher-revving pipe, talk to Jemco... he knows how to do that. His pipes were designed for street use, but he also does race pipes.
Lane
If you stroke it more than twice; you're playing with it.
Too many bikes, too much time, ENOUGH SPACE, FINALLY! Never enough money.........
Stock or lightly modified ports are a little small to make power above 8k. If anyone has the dimensions for a set of Jemco's I'd like to run them through the software and see how they look.
They don't "look" as if they are too short, but they are very small diameter to support large BMEP numbers.