Here is a link to the original MTW Tweaked Stage 1 review thread.
MTW Tweaked Stage 1 and 175/Stock Nozzles....
Ok as many of you already know I have been testing an experimental turbo for Adrian. It is the MTW Tweaked Stage 1 turbo (modified turbine housing just like the Hybrid turbos have). As you all know I was also experiencing MAJOR surging with my turbo when running the Looney Wild Track file written for my 175's and this turbo.
I then switched tuning to my TSD SPD that was written for my stock turbo and my 175's. I immediately noticed a difference in the shifts and WAY LESS SURGING, but it still surged.
Here is a video of the surging. I will try to get another video up comparing this wheel's performance to the original Stage 1 turbo I had.
Fast forward to today.
I get home from work and decided to shovel the snow out of the driveway. Well while I was doing this FedEx pulls up and I got to thinking who the hell ordered something now lol.. Then I remembered speaking with Adrian a few weeks back and he told me he had something in the works that will not only eliminate my surging problems, but also flow more air than what I am getting out of the turbo now, build more boost (which was pretty insane to me considering I can easily hit 44+ PSI of boost with the current turbo and have hit 55 PSI a few times) AND make more power than the previous turbo. So obviously I said I'm GAME!!!
Well I get my package today and see it was from Adrian and I immediately tore open the package like a kid on christmas lol.
Inside hiding behind all of the tape and box and paper was this!!
Pics of cast wheel for comparison.
Sooooooooo...... I decided to brave the elements of 20ºF weather to go yank my turbo out and apart to install the new wheel and see if it indeed does what Adrian claimed it would.
So I started tearing into the turbo.
You need a 8mm 12pt socket to take the compressor housing off of the center section.
Inside of compressor housing.
Compressor housing removed.
Now to remove the compressor wheel you need a 7/8" 6 point socket with an extension on it with a 3/8" drive ratchet on the turbine wheel nut and a 15mm 6 point socket for the compressor wheel. The compressor wheel utilizes reverse threads so you have to act like your tightening the wheel on to break it loose. Once it's loose you can spin it off by hand. Then simply spin the new wheel on and tighten it up. Once its got a good snug on it your done. No need to really crank it down.
Here are a couple of shots comparing the two wheels.
Here it is all assembled and ready to go.
Ok now for results!!!
The preliminary results of my 15 mile test run with the new wheel are simply this.
THIS WHEEL IS INCREDIBLE!!!!!!!
surging!!! I tried everything possible to get this thing to surge and no matter what it just kept build smooth consistent boost pressure!!
BTW I didn't disconnect the batteries, retune or anything. I simply yanked the turbo out and apart, installed the new wheel and reinstalled the turbo. I wanted a direct comparison of this wheel with a tune that I knew surged before and again I couldn't for the life of me get this thing to surge not one time!!
This thing has an AMAZING screaming whistle through the intake while building boost up to 10PSI. Once you break 10-12PSI it sounds like the end of a Shop Vac hose lol. You can DEFINITELY tell it is moving some serious air through that intake.
Bottom end spool up in insane! I literally pulled 90º out of my driveway to the left and had about 50 yards to the road and I wasn't doing anything to try to build boost and before I hit the road I hit 8 PSI!!! It spins up incredibly fast on the bottom end and man this thing MOVES!
I could EASILY hit 44+ PSI on my quick test run. I didn't really get a great test run out of it because when I finished putting it all back together it started snowing really hard out and was quickly covering the roadways. I did get it up to 100+ MPH for a brief second and it did so VERY FAST!
With the torque converter locked it will build steady boost upwards of 35 PSI and continue building it on past 44 PSI while rolling into the throttle. If I give it the wood it will quickly jump to 37-39 PSI and continue to build from there.
Please keep in mind that my turbo will run differently than anyone else's will as no one else has the same turbo as I do but this thing is NUTS!!!
I plan on getting it dynoed in March if I can make it to Rudy's Diesel Day in North Carolina to see what it can really do, BUT I need to get a full fuel tune for this thing ASAP to see what this little guy can really do.
Man I don't know how you do it but DAMN!!! Keep it up man! You have really come through and I really believe that if people don't want to piss around with tuning a million times to get the surging out of their turbos these new wheels are DEFINITELY the way to go!
I will leave you with this for now. Just a quick video of the turbo right after I got it put in the truck and started for the first time.