By A Mystery Man Writer
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Wanted: Pictures of Single EFR with standard IWG and CRV
Good read, may be a repost - EFR tech brief [Archive] - Audizine Forums
EFRs - Wat do it do? - Nissan Road Racing Forums
CA BNIB Borg Warner EFR 7163G IWG T4 Twin Scroll - Forums
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CA BNIB Borg Warner EFR 7163G IWG T4 Twin Scroll - Forums
SPA twin scroll cast manifold vs. single scroll cast manifold, Page 2