Yamaha C3 Performance Upgrade – Exhaust

It turns out that the exhaust upgrade was fairly trivial once I knew what to look for.  I ended up choosing the Jiangwayne Performance Pipe III , which according to their charts offers a roughly 45% increase in horsepower over the stock pipe and increased torque.  It’s not clear to me if that involves any other tweaking, like intakes, but I’ll take it at face value for now and try it out.  I bought the III because it seemed quieter than the other two and that’s one of the reasons I bought the C3 in the first place.

I also did a couple days with the standard 6g roller weights back in (with the Boppers on).  Definitely better than before, but not as good as the 5g weights both in acceleration and getting to top speed.  For now I’ve settled on the 5g weights, though I may revisit that decision once the new pipe is in place and I’ve got more power.

I now have a phone that’s capable of doing GPS tracking, so hopefully I’ll get a chance to do some speed tests and get a reasonably accurate measurement of how fast the bike can go with the changes I’ve made.

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