Really quieted my truck down, especially at idle. Seems to idle smoother with my 250/100's. Makes an awesome budget friendly upgrade that can be done in literally less than 20 minutes

Perfect fit, easy to install, noticed a difference immediately, idles a lot quiter. Seems like I have better acceleration also

My suggestion when installing this is to start with snugly setting the drivers side. This makes the connection to the left an easier fit without torqueing the pipe to connect. My engine smoothed out and holds a steady RPM now. I also changed the ICP and the EOT at the same time so this combo made a nice change for my 158K 7.3 L Powerstroke.

This isnt a mod for more power or mpg. But it will quite the engine down abit. and there will be less shaking.

fast shipping, wasn't hard at all to install, now the old girl idles quieter and seems to have better pedal response.

Fit perfect, definitely notice the difference when idling! Great buy

I would definitely recommend this to anyone. The quality and fit is amazing and the easy of installation is ridiculous. I told my brother about it and he will be ordering one this paycheck. Thanks Riffraff!

Good fit. Quality product quick delivery. Price seemed competitive

Just put this in my 97 (took about 25 minutes) and immediately noticed a huge difference. Quieter and smoother idle with better throttle response. The motor also had an odd "tick" under load and this cleared it right up for cheap. Totally worth every penny. Another quality part by Riff Raff.