I make pipes all the time. to be honest, i don't really find them loud. now if you go bigger than 5hp, volume really changes. but 4 and 5hp motors aren't that loud with straight pipes, in my opinion. But that said, the end of the pipe does make a difference. If it bents a bit, as seen in the picture below, the volume is lower.
I make pipes all the time. to be honest, i don't really find them loud. now if you go bigger than 5hp, volume really changes. but 4 and 5hp motors aren't that loud with straight pipes, in my opinion. But that said, the end of the pipe does make a difference. If it bents a bit, as seen in the picture below, the volume is lower.
i make intake manifolds and use a PZ style slide carb on all my bikes. it's free performance and the throttle is nice, not so on/off ish, if that makes sense.
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