BMW E30 M3 Direct to Head 52mm Kit

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.

Kit performance is enhanced by careful positioning of the EFI fuel injectors being located further upstream than standard and directly in the part throttle turbulence of the butterfly.  This allows increased time/distance for improved fuel mixing increasing torque and power where its needed.  Our spindles profiled to minimise cross sectional area at full throttle and an 8 degree shut angle (shallower than most) gives finer control at small throttle openings.  Our kits come built and balanced ready to fit you your engine and win races.

Jenvey Dynamics design, develop and manufacture all products in house often working with leading engine builders.  Uniquely, with our own foundry, all castings are created in the same factory that they are machined and built in.  Our cast systems are significantly lighter than fully CNC parts and all major components are backed up by rig tests of over 1 million cycles.  All our standard kits are proven but our throttle systems are extremely modular allowing bespoke throttle sizes and system lengths. Please order components individually for bespoke application.

This Jenvey kit requires an aftermarket ECU.

Drawing and other information can be found at the bottom of the page

Option and Accessories

Throttle operation can either be with a cable linkage kit or electronic throttle actuator.  (CLS1/ CLD1)

An idle air system can help make road cars more useable but is not required with electronic actuation

We offer a range of injectors but recommend pico 330cc or 480cc for this kit – see our injector sizing chart.

• SKU: CKDBBW1-52
• Weight: 2 KG