Talked with Clay about the injectors I was thinking of getting and he recommended this wheel for my short-term use of the stock turbo until I upgrade at a later date. Installed it while rebuilding my stock 2002 GTP38 and immediately saw drastic improvements in the character and performance of the turbo. Much quicker spool up and hardly any audible whistle in the cab unless you hammer down. Now easily hitting 22psi where before I hardly made 16-18 with surging.

I have nothing but praise for your wonderful billet fan. It's easy to install and very quiet, very little whine. Thank you

I'm 50+ years old. I buy a product for upgrade or performance only- and don't give a rat's arse about being cool or bragging about it.

Just rebuilt the turbo on my '00 7.3. 180,000 miles; completely stock engine.

Added this wheel to the rebuild. Took Clay's advise and had the rotating assembly balanced. Shop said rotating assembly was spot on; they didn't need to touch it. $50 spent for piece of mind.

New CAC boots from RiffRaff while I was at it.

Turbo installed. Let the truck idle for 30 minutes and drove it easy for 15 miles to get everything broken in and cozy inside the turbo.

Prior to rebuild, my truck had problems pushing 15psi. I can now see 17-18 if I stand on it; a couple pound improvement on the top end.

Turbo spools easier in the 5-10 pound range, where I run a lot.

Turbo whistle is present above 5-8 psi, but far from annoying- just barely enough noise to let you know there is a turbo under the hood.

Primary reason for buying this wheel was to help eliminate surge at high altitudes while towing. Will find out this summer if it helps or not.

Did this thing send sparks out my rear the first time I drove it? Not even close. But if it helps to cure surge, along with a mild performance gain, it will be worth it to me.

trust RiffRaff products

Installed a 360 rebuild kit and this wheel on my 2003 f250. Can hear the whistle around 1600rpm and up and definitely notice a difference in power, especially on hills. Highly recommend!

installed this into a customers bone stock truck. the whistle is so minimal you can barley hear it. It did help this truck with it surge problem. another happy customer

Breaths easier now. cant wait to hook up the 5th wheel and try it out

Woke up my ol' 7.3 significantly for just a simple compressor wheel swap. Quality and precision piece, awesome bang for the buck! Better throttle response, power and improvement in boost you can feel. Installed gauges right after the wheel and seeing 19lbs of boost on factory tuning. Great performance upgrade that I wont have to remove for smog.. Gave my turbo the whistle I was hoping for, quiet while cruising but really comes to life when you put your foot in it. Even made the wife grin!

https://m.youtube.com/watch?v=5GTdQV_1sCs

As with all Riffraff products, a quality piece. Noticeable improvements; no lag, and big increase in performance from mid-range on up. Don't notice a 'whistle', possibly my hearing :-), but the sound is different (good) and noticeable especially from about 1500 rpm and up. Looking forward to towing a load.