2-257-A | B58 Gen 1.5 frs which minimizes wastegate creep and

which minimizes wastegate creep and can improve turbo response by up to 800 rpm earlier in the rev range this means that you can increase the performance and response from your engine without even raising the maximum boost level

• Beneath the tread

They’re right

To vent the Mach 2 to atmosphere

More suited to mid-high rpm power

2-257-A | B58 Gen 1.5 frs which minimizes wastegate creep andDesigned to suit B58 gen 1. 5 engine with bolt on intake, exhaust and turbo upgrades. For an engine producing around 550 750hp running a 58 68mm turbo. Still maintains full use of Valvetronic and Dual VANOS for good throttle response and wide power band. Must have valve spring upgrade, Kelford Cams recommend valve spring KVS58 BT. BMW have released these engines in several revisions. To simplify things the Kelford team have named these revisions Gen