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Originally Posted by northern_ninja
if you wrap the exhaust you do indeed raise the exhaust temps, but in doing so you also make it easier to remove the exhaust gasses ( as hot air is essentially "thinner" than cooler air) therefore making it run slightly smoother, and possibly quicker.
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Sure, chime right in.
This is an old, stale arguement, for a stock production bike, because the impact on an exhaust system that is not professionally engineered and tuned is insignificant (unless you just happen to get lucky). A stock engine needs a little back pressure to keep the gasses moving right.
An engine is generally tuned as a package. Intake, valves, ports, mixture and exhaust. Changing just one of those things usually results in less power, not more. :cool: