Ive got a buddy that is going to start hopping up his 03 Rappy 660. He wants to start with a good set of pipes, so what is the best one out there? We have looked at Yoshimuras, HMFs, DMCs and FMFs. Any body have any opinions on which ones make the most power?

 

Acording to the dyno results I have seen online the HMF Sport Series has the best overall gains but is also the loudest, even with the quit core.

 

Ask driverdoyle

Im guessing your talking about a drag rappy?

 

Eventually a drag raptor. Just going to be an all around duner right now, with an occasional drag race.

 

CT and LTEs are suppose to be two of the best. I had a full HMF sport on my 660 and was very impressed..............so much in fact that my 700 is wearing one also.......[img]i/expressions/face-icon-small-cool.gif[/img]

 

LTE for in-frames
Barkers for drag or out of frame

 

i agree with mad dog, if you want a single, then yousie tit. but that is what works up here at 9,000 ft