Quote:
Originally Posted by BuggyMaster
Just get one of the FMF universal slip ons.
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Yes, this will give *some* gain, but consider that you're not really changing the original problem of the stock exhaust: The restrictive header pipe. You're still stuck with that 3/4" ID with a slip-on.
If you're good at header pipe fabrication, then you can certainly make one of your own and get a bigger FMF slip-on (and I would encourage this if you're going the slip-on route!)
Otherwise, the MRP header is almost 1" ID and the Hammerhead Performance exhaust is a bit bigger than that. You're getting 30-50% more flow than a stock header pipe, which can translate into significant gains.
When using the stock header with an FMF slip-on, we dealers basically consider that a minimal upgrade, if at all.