Fit Was Perfect. My Ipw Numbers on insight were running a tighter pattern

I’ll do a review for all three things that I just bought and installed at the same time. I bought the stainless steel HPX, the FRX, and the Riffraff CPS with longevity for my truck in mind. I thought my truck ran great before install of these three mods. After installation, it was quite the noticeable change as these three mods made my truck start a little quicker, idle smoother, quieter in the cab while driving, better acceleration like my truck was receiving more fuel upon acceleration(ZF6 transmission). Took my wife for a ride and she noted how much quieter it was in the cab while driving! Overall, installation was not bad. Very happy with how these improved an already good running truck!

Might just be placebo, but it seems like it quieted and smoothed the engine out.

Easy install!

Great product

Tried installing this on my E99 when I put on my new KC turbo for it (also purchased at Riff Raff). The part is so close to the compressor outlet and spyder pipe that there isn't enough clearance to mate the two parts together or get the clamp between this line and the spyder.. I think this part should work fine for L99-03 because the turbo is about an inch higher than the E99 which should give it the clearance it needs. I'm going to use a flex line on my E99 to get past the clearance issues.

Excellent easy to fit product, works great.

Follow the instructions and torque the fittings so you don’t over compress the o rings. May be my imagination but I do think the idle is a little smoother.

This is very well made(like everything riff raff has). Install was a breeze and made a noticable difference to me in the smoothness of the engine.