Does anyone know the power of the dual hmf's compared to the others?

 

I have yet to see any legitimate dyno numbers for any of these pipes, but you can't go wrong with the HMFs. I've never read a complaint on them except that they're loud, but so is just about every other pipe.

 

HMF used to have a dyno sheet on their website on all their pipes for the v-force. They don't any more but they said the dual pipes gave the V 7 to 9 more hp. I definately noticed a big difference with mine. I don't think HMF had a comparison sheet on other manufacturer's pipes.

 

Check out the MBRP Power Tech 4 dual exhaust. I put a set of these on my machine they are loud (Harley loud) but they made a big difference in the power. I also rejetted the carbs and put a K & N filter on as well.

 

^^^^^^^^

Are those the ones that the silencer is blank?

 

I have the MBRP's as well. I like how they sound and they made a difference in power. Bbertram used to have soundclips on his website of different pipes, see if you can find it in a search.