Topic: Engine

M30 Cam Removal Tool DIY

Article by: RobertRO Models: All BMW models with the M30 engine (or similar SOHC 4 cylinder engines). I needed a tool to easily remove the M30 cylinder head camshafts. Since I don’t have the BMW special tool, I had to go for a DIY approach. I used only materials that […]

Cleaning the Air Flow Meter Potentiometer

Article by: Paul Axford Applies to: all models with the vane style air flow meter (this article was written with a 730i). The AFM is an early-80’s relic from the second generation of electronic fuel injection. This massive sensor sitting dead-center on top of the engine does two things – […]

AFM Adjustment

Part 1: Article by: RAkhmedov Applies to: All models with the M20/M30 straight six engine. The M30 engine uses an AFM unit to provide information to the computer about the amount of air that enters the intake. The unit uses a flap reinforced by a spring that continually presses the […]

How to Choose the Right Turbo

Article by: Author unknown Article applies to: all BMWs. I decided now would be the perfect time for everyone to learn how to properly read a Turbo Compressor map, and how to choose a proper turbo for your vehicle. Here we will show a compressor map for reference:   First […]

Bosch Injector Rebuild

Article by: Michael Oswald Article applies to: all BMW models with the low impedance Bosch injectors. Problem: After installing a Perfect Power SMT-6 piggyback computer, I wanted to install new / used Bosch 24# blue top injectors. The SMT-6 has already been set up for these injectors. So, I went […]