VAC - M52/S52 Ported Throttle Body

This Big Bore throttle body is designed to increase performance across the rev range. This is the best, smoothest flowing design on the market.

Starting with the OE BMW body, many diameters were tested before we found one that gained the best performance while maintaining all OEM functionality and drivability. Larger, was not always better.

When looking to extract maximum horsepower from a highly efficient engine, the entire intake track must be taken into consideration, and a balance needs to be obtained between all components.

On the M50 / S50 series of engines, the engine has only one throttle to ingest large amounts of air. When you want maximum engine output, this opening must be properly enlarged so the engine is not 'choked off'.

We offer both Big Bore OBD1 & ODB2 Throttle Bodies to really unleash the maximum output of your engine. Our throttle bodys are OEM units that are professionally cleaned, bored to 68mm, and air-flow transition blended, then equipped with new butterflies for maximum flow while keeping factory fit and pedal feel. 

Each throttle body is smooth in response and user friendly so its perfect on the street or track. Typically software upgrades are not required*.

Bolt on gains in the 5-10hp range, with similar torque gains can be had. With other performance upgrades like cams or forced induction, even further WHP can be gained with this modification.

• A bolt on upgrade
• No Check engine light issues
• Improved throttle response
• OE like drivability
• Repeated dyno-proven gains

NOTE: This is sold as a service. Please send in your throttles and include your order number as reference.