[wheelhop]

It's to clear the air about what BEP makes and what BEP sells. Since they are different things, you can't exactly get b!tchy at BEP if a garrett fails. You get irrate with the turbo manufacturer. Considering that Brent Rau buys from BEP, there must be some goodness there. Somehow they manage to know what they are doing.

Many have yelled that the bep housing is a restriction and shouldn't be used because 50000more hp was made with a garrett turbine housing. The same can be said with any bolton housing. And for one to yell about his loss in power means that said person didn't choose his turbo properly. The bep housing is a specific piece and it takes TWO things, the turbine wheel AND the turbine housing, to make a turbocharger turbine. The flow is based on both. A turbine wheel should be used to determine flow, because if you know a charger, you know that a turbine housing TWEEKS flow and spool. It is not the chief dictator of it. If you have a t3 stage 5 turbine wheel and you chose a bep turbine housing because you want to have sub 4500rpm spool speed then why yell about the loss in flow? The stage 5 wheel is just that kind of animal. You cant get the flow out of it with out the lag.

Good thing about the holset is that thier turbine aerodynamics is drastically improved. The hx35 turbine wheel is about as big as the t3 stage 5 turbine wheel. And in the bep turbine housing, it spools to 20+ psi before 3600rpms. And spools to 20+ psi before 4K typically with a turbine housing that lets it flow enough for 600whp. . . BEP chose well. And their turbine housing with the stock hx35 turbine wheel matches well for the 52lb/min hx35 compressor.

Now the small bep housing with the hx40 turbine wheel has output over 650whp with the large hx40 compressor, so you know that the turbine housing isn't a choke for the hx40 turbine wheel either.