Has anyone got any information on the HMF Ecosystem utility exhausts, especially how much power they will make? How are they going to be compared to the original HMF with a Quiet Core insert? I've heard this quiet core insert on the older HMF utility pipes caused engine overheating and increased wear and tear on the pipe itself, any truth to that?

 

I'm looking at these pipes too and I can't find much info at all not even the price of one.

 

hey guys go to http://www.hmfengineering.com and it will tellu the rpm gain and the hp gain hope this helps....

400excrazy