Forge Motorsport FMAC5SUB Turbo Blow Off Valve for Subaru Impreza 2.5 WRX STi

Adjustable Actuator for Subaru Impreza WRX STi 2006/07

Forge Motorsport were one of the first manufacturers in the world to design two-piece aluminium turbo actuators.

Originally for the Cosworth, Renault 5 GT Turbo and Lancia Integral Turbo, they rapidly developed a vast range.

Choice of spring strength. Manufactured from 6026 aluminium. Specifically designed for this vehicle. Specifically designed for this turbo. Built to order. Handmade and polished in the UK. Piston or diaphragm choice on most actuators. Reinforced fluorosilicone diaphragms. Laser-cut stainless steel mounting brackets (where available). Tuning and service kit available.

Made in England.

Lifetime Warranty.

Please note: The pressure levels listed in the drop-down menu above are the minimum turbo boost pressure values. If you have any questions,

by installing a Forge turbo actuator, you will be able to make full and precise adjustments and manage your specific turbo pressure needs. This product provides improved turbo response and control. It is manufactured with a standard spring suitable for pressures slightly higher than the factory turbo.

This actuator can be modified with a stiffer spring on request for modified vehicles requiring higher turbo pressures. Please contact us directly for this. It was designed and manufactured with the aim of increasing turbo pressure. We cannot guarantee compatibility with all models, nor the ability to increase turbo pressure beyond the level set by the vehicle's engine programming at the time of installation, whether original or modified. The diaphragm configuration is the default, but customers can now opt for the piston configuration.

Exclusive to Forge Motorsport, this innovation offers diaphragm-like performance, as well as less restrictive maintenance thanks to the piston's resistance. Forge and its distributors accept no responsibility for damage caused by the installation or adjustment of this product in a vehicle whose programming, whether standard or modified, does not allow for an additional level of adjustment. We are pleased to offer you this Forge Motorsport actuator, but we cannot guarantee that the various parts of your engine will withstand such high pressures.

Box contents:

1 x FMAC5SUB Actuator

1 x Forge Decal

This actuator comes with a standard spring. If you would like the FMPACTUN tuning kit, you can select diaphragm type 2, option 049.