EFR Turbos

jran76

From a turbo efficiency standpoint, there is not an EFR turbo that would be a good match for a single turbo application. You can review the compressor maps, and BW has a cool application that allows you to match an EFR turbo to your specific needs. You will end up with a turbo that is either choked on the upper end, or really inefficient on the lower end.

BorgWarner MatchBot

It is possible they have expanded their line or I just missed something when I was looking, but when I looked 6 months ago, I could not find a good match for a single turbo application. They had several that would work well in a twin turbo app. As mentioned, the EFR is physically bigger than a comparable turbo, so fitting twins will be tight. If you go this route, I would wait to see what Full Race comes up with.... They mentioned using 6258 or 6758.

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2009 G37S Sedan-6MT: Advan / Volk / Tein / SPC / Invidia / Cobb / K&N