GFB WGA Internal Wastegate Actuator - Mitsubishi Evo 9 (CT9A)
Application: Mitsubishi Evo 9 (CT9A)
Part Type: WGA Internal Wastegate Actuator
GFB built the WGA to solve the boost control problems that plague turbo systems still running an internal wastegate. Featuring an industry first Nomex reinforced diaphragm and a PEEK pivoting rod guide, it delivers more control authority in a shorter, more compact housing. For the Mitsubishi Evo 9 (CT9A) running the factory turbo, this actuator sharpens spool up, reduces boost taper at high RPM, and gives a far more stable boost curve than the factory unit.
This listing covers SKU 7302, a direct bolt on unit specifically designed for the Mitsubishi Evo 9 with the OEM turbo. It comes fitted with the 69 kPa (10psi) and 48 kPa (7psi) springs installed for a base pressure of around 117 kPa (17psi), with a 34 kPa (5psi) spring included for further tuning.
Important: this is a tuning tool, not a plug and play part. It will increase boost pressure beyond factory settings, so a professional retune is required after installation.
Key Features
- Nomex reinforced silicone diaphragm for maximum control authority in a compact housing
- PEEK pivoting rod guide for low friction and long term durability
- 18mm rod travel - longest stroke in its class
- Turnbuckle adjustment for fine tuning base boost without swapping springs
- Three stainless steel springs supplied, adjustable from roughly 34 kPa to 152 kPa (5-22psi)
- Direct bolt on fitment for Evo 9 with factory turbo
Vehicle Fitment
Please confirm your Evo 9's turbo configuration matches before ordering.
Supplier-listed applications:
- Mitsubishi Evo 9 (CT9A)
Note: Compatibility information is provided as a general guide only. Some vehicles may have multiple part variations for the same model or engine. To ensure this product is the correct fit and to be eligible for our Fitment Guarantee, please contact our team before purchasing.
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We aim to process and dispatch all orders within 1–2 business days. If there are any delays, we will notify you promptly via email.
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All products are sourced directly from the manufacturer or authorised suppliers to ensure authenticity. Every item is backed by the manufacturer’s warranty.
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We offer free standard shipping on all orders over $150 (excluding bulky items). For orders under $150. Standard shipping starts at $9.95. Express shipping starts at $14.95. Shipping costs can be calculated in the cart or at checkout. Orders containing bulky items such as batteries, brake discs, liquids, and lift kits may incur additional shipping charges, particularly to remote or regional areas.
Dispatch & Handling
We aim to process and dispatch all orders within 1-2 business days. In the event of any delays, our customer service team will notify you. Tracking numbers are sent via email once your order has been dispatched and can also be accessed from your account.
For enquires on same day delivery or pickup, please contact our team before ordering to check availability. Custom or order in only items may have longer lead times. For more details on shipping, see our Delivery information page.
Returns and Refunds
If you change your mind or need to cancel an order, simply contact us at contact@tjautoparts.com.au within 30 days of delivery. Items should be unused and in their original packaging. A small restocking/admin fee of 5–20% may apply to help cover processing costs. This fee is only applicable at the discretion of our staff and may not apply to all orders. Return shipping is covered by you unless we sent the wrong or faulty item, in which case we’ll take care of it. Once we receive your return, refunds are processed quickly, usually within 48 hours, with up to 5 business days for your bank to complete the transfer.
We’re here to help make returns easy and hassle free! Contact us with any questions.
Warranty
All products come with the manufacturer’s warranty. If you experience any issues, please contact us at contact@tjautoparts.com.au. For full details on warranty coverage and claims, please visit our Returns page.
