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The S38 engine was in production from the mid-1980s to the early 1990s

re-calibrated VANOS control

5 mm exhaust valves

this intake manifold is CNC machined from billet aluminum

Kies Motorsports Charge Pipe, BMW B58 CPN-3543 Thread TypeThe charge pipe and boost pipe are the pipes that hold pressurized air from your turbo and take it to your engine. Unfortunately, BMW typically makes OEM charge pipes out of plastic or rubber, which is a terrible idea for holding pressurized air. While this is a very cost effective thing for a manufacturer to do, they typically fail when the plastic starts to age, especially when you start to turn up the boost in your car! If you have a charge pipe