Question about 2008 Harley Davidson FLHX Street Glide

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Is it ok to run rinehart slip ons without re mapping air fuel ratio

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Yes, as long as you don't change the airfilter

Posted on Aug 30, 2010

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Technically, you should be able to get away with it as long as you don't put a higher flow air cleaner than the factory one, but it's not the correct way to do it.
Pipes help to improve the "breathing" or flow of air/fuel ration through the engine. The fuel injection is set to deliver a certain air to fuel ratio, so if you improve the output, or air flowing through the engine, you should also increase the fuel to compensate for it.
A leaner engine - or one that has a higher air to fuel ratio will run hotter, can "ping" (pre-ignition) and cause damage to the cylinders and pistons.
An air cooled Harley Davidson relies even more on the fuel to air ratio to moderate temperatures than a liquid cooled engine, which has a radiator, etc to cool it.
It's simply not worth the risk to run your bike for longer than it takes to get to the shop and have it re-mapped. It will also run cooler, and make more horsepower if you put a higher flow air cleaner and have it re-mapped.
Hope this helps.

Posted on Jan 08, 2011

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Asdf asdf

Posted on Aug 31, 2010

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