OK, I know I may get alot of flaming for this but, what exactly does this do. I am not very technical when it comes to working on the busa, I usually have a local guy that I ride with who happens to own a shop do most of the work. However, I just installed rs-3 cans (myself, I'm getting brave in my old age) and I have the backfiring problem. Sounds like this marble thing solves it, but what exactly are the principals behind the pair valve (meaning what is it supposed to do) and why does putting a marble in it stop the backfiring problem?