Hi I was wondering if i install a Rinehart slim line header. will i need to have the bike re flashed , tuned , or will it be OK just to run it as is? 2016 Roadmaster Thanks.
The general rule is that you can change the intake without requiring a flash (although the Indian intakes come with a flash card), OR change the exhaust without a flash, but if you do both, then you need a reflash.
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