Arctic Cat Discussions about Arctic Cat ATVs.

hmf exhaust

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Old Feb 25, 2010 | 11:20 AM
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mp21126's Avatar
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Default hmf exhaust

is it true an hmf exhaust will increase the horsepower? if so, by about how much? does anyone else have that for their AC?
 
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Old Feb 25, 2010 | 07:08 PM
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TexasRoadlawyer's Avatar
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Not any more than other performance exhausts (at least not substantially) AND...unless you also add a less restrictive air cleaner and rejet it, you won't gain anything.

HMF is a good pipe, but be sure to get the optional "quiet core" or it will be too loud
 
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Old Feb 25, 2010 | 07:33 PM
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I like my HMF Swamp XL
I bought a quiet core and put in it and it sounded TERRIBLE so I sold that
Now just have the pipe and S/A and it sounds great
Not too loud, lots of grunt...
I also put on a UNI and next to get the most out of it a Power Commander V
 
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