Bills test (PHP) was done on a 38R 7.3, which is probably the single most popular turbo upgrade out there for 7.3's.

The one for the 6.0 that Craig posted I believe was on a stock turbo truck, but again... he's not using them in his own truck either.

I'm not sure I follow your line of thinking. What does it matter if the truck is purpose built or not. A turbo pushes a specific amount of air at a specific drive pressure. It can be altered a few ways, ie., chaning the impeller, inducer, exducer, housings etc. These are direct comparisons of the SAME turbo on a given truck with the only thing changing being the impeller wheel design. The size is the same. Everything I've read points to the batmowheel pushing less air.

Unfortunately there just isn't a TON of data out there on this. Until this BW chart popped up most of it was just speculation. The compressor map doesn't lie, it really shouldn't matter what turbo it's on...

My 2 cents.

Here's some interesting turn of events. BEP posted on their facebook page (Bullseye is who makes the batmo's)

This is an all out head to head Dyno Competition to see who has the better turbo. Turbo must be a Borg Warner Based Unit for this competition

Tune will remain unchanged, unless added fuel is necessary to raise the EGT’s to the level of the other turbo tested

Diesel Fuel Only, no nitrous, propane or water injection

Test will be MM for MM and only the CHRA and cover will be swapped

Single turbos only, no compound systems

No Clips, Bushings, or MAP enhancements typically found in a sled pulling charger

Must be a Minimum of 10 trucks and a Maximum of 20 trucks

$100 entry fee is non refundable

$500 payout if you can beat the BatMo Charger in average HP over the optimum RPM range of your dyno run. Torque will be used in the event of a tie

Entries must be submitted 7 days prior to the event date. Any truck entered two times or more for the purpose of running more than one size charger will pay the $100.00 entry fee per entry and must submit a tech sheet per entry for that same vehicle.

Tech sheets must be filled out and emailed to sales@bullseyepower.com No later than 11/10/2012.

Trucks will be driven only by the dyno operator.

Turbo swaps will be closely supervised by the dyno tech or techs and the dyno techs ruling on any infraction or interpretation on rules is final.

If your truck shows up at the dyno with anything other that what is specified on your registration form you will be disqualified

If for any reason your truck is disqualified no entry fees will be reimbursed since your dyno position was reserved.

All participants including BEP will have the option for 1 “mulligan” for example if you blow an intercooler boot, turbo or if any other quick repair can be made and another dyno pull can be made within 15 minutes which will be the maximum time frame allowed to make the repair, if the truck is still strapped to the dyno and if it must be removed then 45 minutes will be allotted or until the next truck has made its pull and the dyno is ready, whichever comes first.

No Hood Stacks allowed!

http://www.batmowheel.com/public/BatMoChallenge.doc

The Dyno Challenge will be held at Danville Performance on Saturday November 17th at 8 am

I wonder if they are going to make the turbos with their wheels go first and then make the normal wheels go after so there is heat quenching.

It's not going to be on the same trucks, it's a run what you brung and see who's truck makes the most power. Not exactly apples to apples, but a fun shootout none the less and they seem think they're going to make more power no matter what judging by the payout if you win.

Or am I reading this wrong? They're going to run both turbos on each truck? If that's the case, you bring up a good point.

That in my opinion is the only way to be fair is have the same trucks swap turbos. At the same time most trucks cant swap chargers that fast. If you have a built 3.0 duramax sled puller with a bat mo wheel and the next biggest truck is a common rail dodge with dual cp3's of course the 3.0 truck will win then. The is quite abit of fault in the rules if you ask me

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Or find 16 trucks with identical set ups and have 8 run a bat mo wheel turbo and 8 run a traditional cast wheel. Set them tuning the same and go from there

I think you're right, and I completely mis-read that. Sounds like you run your truck, as long as it's a BW turbo, then they will swap the cover and the wheel and re-run the truck...

Wow.. Thats great they are putting on a show. Lets see how the numbers come back.

Mdub, My thinking (mind you I'm not an engineer) is that there is some kind of relationship in the size, shape, weight, and design of the compressor wheel to the design, size, and shape of the turbo housing. I'm thinking that even though the batmowheel fits into any given turbo doesn't mean that it will work at 100% potential in that housing.

Thats the only way to be fair. And i think you are right as well. I never did think of swapping the housing and wheel

The whole idea behind the batmowheel is that it's "wavy" shape creates a longer line. A straight line is obviously shorter than a squiggly line that both have the same starting point and ending point. This in turn creates more surface area, and theoretically should be able to pull more air in. However given the same inducer size... you can only stuff so much air through a certain size hole. Even if the cover does make a difference, does the batmowheel still seem as appealing? The idea was just swap the $400 wheel in to get a difference. $400 was a good price point to get guys into buying it, instead of putting the money towards a newer turbo (think powermax, only $1200shipped or less most places). Would you still spend say $700 on a cover and a wheel, if you can get an entire upgrade turbo for $1200??? That's what I'm curious about more than anything. At what point does the cost outweigh the benefit, IF there even is a benefit...

This will be an interesting shoot out. My guess is they're going to be so close it's going to end up being a wash. Either way BPE gets a ton of publicity though don't' they?

I have a deal for them. I'll go down there and run my truck. Once as is, once again with their wheels and covers. If there is a significant difference, I'll buy the parts and head home. Think they will go for it? :ha: