Last March:
http://www.dieselplace.com/forum/showthread.php?t=413687
Rudy's Diesel Performance in Durham, NC had a dyno day today with Dunbar's dyno on hand for the competition. A stock turbo, single CP3 LLY did 604 rwhp and 1108 ft lbs of torque on fuel only on Dunbar's rollers. The truck backed it up with a 598 rwhp pull and a 599 rwhp pull, all uncorrected. I'll load the video and dyno sheet soon.
This customer agreed to do some back to back testing on the drop in BatMoWheel before we swap in a built motor. Since he has a boost and drive pressure gauge and fuel was not going to be a limiting factor I figured it would be the perfect truck to get some solid before and after numbers from.
Took the truck back to a local dyno Friday to verify last year's results and get numbers on this dyno before swapping a BatMoWheel into the stock turbo.
Just as it sat last March it dynoed 601, 604, and 607 in the morning, then we took it to the shop to swap the compressor wheel, then dialed it in on the street, then took it back to the dyno. On the street it needed a little more fuel in the tuning to get it back to the same light haze it had before the wheel. We also played with vane position at high RPM (3400+) to relieve some drive pressure through the end of the 1/4 mile. When we finished dialing it in we loaded the tuning from the morning back in so that we could see what only changing the wheel did.
With the BatMoWheel it dyno'd 636 with no tuning changes, it put more horse power and torque under the curve through the whole RPM range. Where power on the stock turbo had plateaued and started to fall off before 3600 RPM, the BatMoWheel pulled harder through the whole pull. At 3400 RPM it gained about 40hp and 70 ft lbs of torque IIRC.
The tuning with the additional fuel and less vane position didn't help the power. It seemed that with less load on the truck with it on the dyno compared to on the street, the additional fuel that was obviously needed and helpful on the street didn't come across as more power on the dyno. This is why I don't do tuning on the dyno, but instead on the street and then fine tune it on the track - where the truck is being operated under real world conditions and the actual load of the truck. We'll finish dialing it in at Rudy's event next March.