groupus
Senior Member
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Maintenance is as much art as it is science.
Posts: 296
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I think the guy your buying the jet from probably just assumes that you have not idea what you're doing. The type and amount of free flow through your HD muffler will determine how much you need to re-jet, but doing so is almost always a necessity. You may need to experiment to find what makes the bike happy. Keep an eye on the color of your header too.
I have a pretty much straight through HD exhaust with only a small bump for a baffle, 155 main, tuned pilot, and unmolested white spacer. This gives me more torque, better highway performance, and up to 70 mpg if i'm behaving.
Good luck, -G
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