I don't believe they yielded much gains to be honest. Apparently the Stillen G3's are the way to go, although the R2C intakes have gains that are above the G3's in some areas... HOWEVER, this dyno was done on a G37 not a 370. Surprisingly there have been no independent tests on the R2C's. I am seriously considering buying them and doing it myself, but if they don't do well i'm just going to lose a bunch of money which I don't want to do either lol.
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