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** Spring perch between spring and chassis required for locating and adjusting spring **
Suits Both Non-VVTI & VVTI Models
VVL crossover around 5
Let’s Talk About Performance
2-257-B | B58 Gen 1.5 1989-1993 - R32 AWD ** Spring perch between springStage 2 racing cams for professionally built BMW Gen 1. 5 B58 engines making 750hp 1000hp. Turbo sizing 62 72mm. Great with aftermarket intake plenums. Still can maintain full use of Valvetronic and Dual VANOS. Can run Valvetronic locked in full open position when using an aftermarket throttle body. Must have valve spring upgrade, Kelford Cams recommend valve spring KVS58 BT. BMW have released these engines in several revisions. To simplify things the
