WHich fullsysten pipe is better for a 660 raptor HMF sport or Yoshimura Rs-3. which one gives out better power and what one is louder.

 

In my opinion, the HMF is a better pipe. The Yoshi is more expensive. The HMF is louder and better sounding, and not sure which delivers more power, but I know the HMF is a good pipe for the $$$ and will offer a substancial power increase.

 

With price they are about the same. But that does not matter also what about LRD pipes same price range and they claim an 11 hp gain can anyone verify that.