Where does the idea come from that a cast wheel is lighter?
Billet wheel flows more air and starts flowing more air earlier therefore creating an earlier power increase or what is called "quicker spool". It's not really a guess. It's a fact. At least with the turbos we sell. Maybe someone else sells a billet wheel charger that is worse that a cast charger. But I'm sure they won't be in business long.
And just because it's a billet wheel turbo doesn't automatically mean it has a 360* thrust. Ours do. But there are a lot of cheap turbos out there that just have a billet wheel dropped in. They don't have the 360 thrust or much less were properly rebalanced or balanced at all.
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