first off I'll say hi, I've been lurking, reading, searching etc... I've got a robin 35cc, I've seen posts before on additional power from a small 4 strokes, and am wondering.... a 1/2" exhaust pipe with a small silencer could really open up the exhaust side of the equation.... is there a reason that we haven't seen a cool (read performance orientated) exhaust? I know that our gains are minimal, but.... not only would there be some power increase, if from nothing else than straightening the exhaust out, much less loosing a ton of restriction/ weight/ and if done correctly it could look really cool. (I know, back pressure is a good thing as well)