With the Jenvey BMW E30 M3 Direct to head kit, we use butterfly throttle bodies compared to the slide throttles that BMW fit as standard. Butterfly throttle bodies tend to achieve a lot better air to fuel mix. The Jenvey Throttle Bodies have a 52mm butterfly where as the standard BMW and other kits on the market use 48mm, this means that air can flow into the engine much smoother. The Jenvey linkage can be mounted front or rear, upper or lower.

This kit includes a pair of Direct to Head throttle bodies, fuel rail and air horns.

Testing showed an increase of 18ft pound torque mid-range and 7 – 8 HP above the standard M3 throttle bodies.