Originally Posted by Silly Rabbit

I have installed Motordyne ART pipes and Fast Intentions RHFC. They are both quality products. I started with the ART pipes and changed to RHFC. I have a Borla cbe that does not have resonators, so I found the ART pipes to be too boomy in around town driving. Not exactly too loud, but around 2k rpm, it had a deep drone that would vibrate the interior. The RHFC are not as loud overall and they still have a slight drone around 2k rpm, but it is tolerable.

The ART pipes sound better at idle and WOT, but overall, I like the RHFC better. My butt dyno would say the ART pipes gave more power, but that may be just because they sounded more aggressive \ raw.

Other difference is ART pipes use the stock ring style gasket and FI uses flat gaskets. ART re-used the factory bracing system, FI does not.

I didn't have a leak with either system. They both fit up great. Neither set gave me a CEL. They both cost about the same ~$450 for a good used set.

If my cbe had some 12-18" resonators, I probably would have stuck with the ART pipes, but I didn't want to modify my Borla system so I went with the RHFC and feel like I made the right choice for me.