Quote:
Originally Posted by FFPerformance
I would agree that differences in comparing a cast vs billet wheel OF THE SAME DESIGN, would show similar results on the dyno, but keep in mind that most small run, and test compressor wheels are made by CNC. Generally these are of a newer design and potentially better performance than standard cast ones that have been around for a while.
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Exactly. I'm not trying to confuse the two, and what you said is exactly it. The reason I bumped this back up with another article is because I've heard from a few people recently who have said specifically that they were under the impression that a billet wheel will spool faster and produce more power simply due to the fact it is a billet wheel, and that it makes it lighter.
What makes the new billet wheels better is not because they are billet, it's because they are NEW. New better design, not because it's bling bling.
Also, which mainstream turbos are you aware of that are machined from a forged piece of aluminum rather than just a cast piece of aluminum? I ask because I have no clue.
Just because my BW is a cast wheel, doesn't mean it's not going to hang with, or exceed the performance of a PTE Billet of similar size
*Edit - from what I gather, it appears the new BW EFR comp wheels are forged billet wheels