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I have always heard good things about RB turbos. I also believe in some things being made in the USA.
BUT, my Wuhan Warriors (VIV 17t's early 2020) have been going strong at 19-22 psi for years and ~28k miles. They still feel the same (seat of the pants) as when they were installed. They cost me just under $1,000 shipped and I have 2 fuel pumps/PI, FBO, DP, and some Chinese stainless free flowing exhaust. Maybe the downpipes and free flowing exhaust have helped but my car doesn't smoke. The only smoke I ever seen is very faint when exiting the highway just after going WOT to the exit. Even then I can only see it if my top is down and is likely due to extra fuel dump on rapid decell and my lack of any cats. I guess I got lucky and I am sure if I ran them at 30psi I would have killed them by now but unless I get a good deal on some high dollar units I can't see spending double or more than what I have to. I have owned 1 M235i, and 4 E93 335i's, 3 with N54 engines, 2 with N55's and I have had to drop EVERY cars subframe at least once to do oil pan at a minimum. I also rebuilt 1 N54 and 1 N55 with a modded N54 crank. My point is that I have a Quick Jack in my air conditioned garage, and more experience than I desire at dropping subframes. If I can save $1,000 or more with only a small chance of having to drop a subframe for the 39th time, I am willing to take that chance. I know for most people the extra money and peace of mind is worth it. I have also broken the rules with almost every other part on my car being cheap Chinese knockoffs. My Inlets, outlets, 7.5" stepped intercooler, DP, exhaust, BOV, CP, dual OCC, are all knock offs. I do have the Phoenix Racing PI manifold and Injectors, but all my other parts are cheap. I even made my own external PCV. I still am considering the Frankenturbo because I have heard good things about the spool and flow but am open to suggestions.
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