Quote:
Originally Posted by LuckyX2
The billet wheel, on the 7163 at least, is very aggressive. BW can get away with doing that because of the extra torque at low blade speed ratios offered by the new turbine. The other EFRs have slightly less aggressive aero and are comparable to the stuff coming from Garrett except for higher pressure ratios where the BW parts win out.
However, the real advantage to EFR's is the Ti-Al turbine, that's one thing Garrett can't touch.
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Gtx turbos are great. But fact is that they're just not as light as the EFR wheels. Response really is night and day difference. I was skeptic when Geoff from full race told me about the EFR's...but after seeing dyno vids and charts with back to back differences... it really is night and day.