Alright guys,

I have a tinker-toy that I have been experimenting with and was wondering...

I've heard that the small engines need SOME backpressure to work correctly. I would like to know because I am thinking about taking the cat off and installing a "test pipe" effectivly reducing my backpressure. Will this produce any changes in ponypower, or will it just reduce torque and hp?

I'd really appreciate any input.

Thanks guys.