Turbosmart EFR IWG-B1 Twin Port Wastegate Actuator

Ultimate boost control

£185.88 inc VAT

Usually ships within 3-5 days


This wastegate is designed specifically for all B1 EFR turbochargers, it is the ‘Twin Scroll’ variant with the longer rod, allowing for as little pre-load as you wish. In our experience, this is the best wastegate for the application for both ‘twin scroll’ and ‘single scroll’ turbine housings.

It is all about control

The goal of a wastegate spring is to be able to run the smallest amount of boost you want but also be able to turn it up to whatever you want, whenever you want. With this combined with an ECU and a mac valve boost controller – you can achieve fine control of boost as well as have an incredibly low minimum boost level, making the car perform better in all weathers.

The Twin Port IWG-75 uses the air-pressure differential between two sealed chambers to create a dynamic force which overcomes the mechanical spring force in the actuator. Creating a boost curve that is much more precise, and allows for a much wider boost range between minimum boost and maximum boost, than the single tier control offered by conventional actuators.

The Turbosmart wastegate actuator range has been designed as a stronger, more reliable replacement for OEM parts. Like all Turbosmart parts, billet construction means they are stronger and more durable than a stock actuator, while Turbosmart’s focus on performance means boost comes on faster and holds on longer.

The Turbosmart IWG-75 actuator range features:
• Stable boost control
• Improved boost response
• Flatter boost curve in the top end
• Interchangeable springs for a great range of boost levels

Supplied With:
Fitting Hardware, Brown/Purple 7psi Spring and Brown/Pink 7psi Outer Spring (installed)

Weight 0.5 kg
Dimensions 28 × 8 × 9 cm



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