Adjustable Actuator for Subaru Impreza Fitted with IHI VF48 Turbo
The Adjustable Actuator for Subaru Impreza Fitted with IHI VF48 Turbo is a high-quality replacement turbo actuator designed and manufactured by Forge Motorsport. Made from 6026 grade aluminium, this actuator is specifically designed for Subaru Impreza models fitted with the IHI VF48 Turbo.
This actuator offers a range of spring pressures to suit your car’s specific needs. It is built to order and machined and hand polished in the UK. The actuator is available with either a piston or diaphragm operation, depending on your preference. It features nomex reinforced flurosilicone diaphragms and laser cut stainless steel brackets for added durability.
When you install this Forge turbo actuator, you will have the ability to fine-tune and manage your boost requirements, resulting in improved response and better control. The actuator comes with a predetermined spring suitable for factory boost levels, but can be assembled with a stronger spring for tuned vehicles or higher boost levels.
Please note that this actuator is designed to increase the boost output of a turbocharged system and may not be compatible with all applications. Forge Motorsport cannot guarantee compatibility with all engine management systems or the ability to increase boost beyond the parameters set by the vehicle’s system. It is important to ensure that your vehicle’s engine and related systems can support the elevated boost pressure before installing this actuator.
The actuator is available with either diaphragm sealed internals or piston sealed internals. The piston sealed internals offer equal performance to the diaphragm type and require less maintenance.
In the box, you will receive one FMAC7SUB Actuator and one Forge sticker.
At Progressive Parts, we offer fitting services for this actuator at our performance workshop. If you have any questions or need assistance, please feel free to contact us.

