FORGE boost control solenoid (Pierburg)

Description

The boost control solenoid from Pierburg allows fine control of boost pressure. It is a 3-port N75 valve that upgrades the 2-port device fitted to many turbocharged vehicles. It also serves as a replacement solenoid for FORGE Motorsport electronically controlled valves.

The solenoid can replace the OEM parts listed. It can also be controlled by the engine management computer of a factory turbocharged car or by an aftermarket electronic boost controller. The best option is usually a standalone ECU, which lets you adjust boost together with fuelling and ignition timing.

A boost controller changes the air pressure sent to the mechanical wastegate actuator. By bleeding off pressure before the actuator, it lets the turbo produce more boost. Even with electronic control, an actuator spring that is too soft can let the wastegate open earlier than intended, because exhaust gas backpressure still pushes on the wastegate valve. Electronic control can still regulate boost to over double the rated pressure of the spring.

Installation

Set up the boost controller with road mapping or on a dyno so that safe AFRs are reached once boost levels are set. Always have your engine builder or a professional tuner check the fitting and use of this part.

Specifications

• Manufacturer: Pierburg
• Type: 3-port N75 valve
• Replaces OEM part numbers: 1227883, 1M5O-9C728-AA, 2M5O-9K378-AA
• Wiring harness: with wiring harness, without wiring harness

Warning

Installing a boost control solenoid is not a job for a tuning novice. Fit any boost controller, manual or electronic, with caution. Misuse or improper tuning can destroy your engine. If you are not familiar with engine tuning and how boost controllers work, do not fit this part to control your turbo boost pressure.

This part is not made by FORGE and is therefore not covered by the FORGE lifetime warranty. FORGE Motorsport accepts no liability for engine damage caused by incorrect fitting or misuse.