Grail Automotive BMW Exhaust Valve Controller

This BMW exhaust valve controller from Grail Automotive allows you to take full control of your vehicle's exhaust system. Grail understands the frustration of BMW's factory exhaust valve settings. Want your valves to stay wide open constantly? This is your solution!

Works with factory BMW exhaust valves.

PRODUCT SPECIFICATION

- No additional wiring is required
- Plug & play to original valves
- Increase valve opening operation to 100%

Two settings:
1) Open valve to full
2) Operate as per OEM operation

COMPATIBILITY

- BMW F20/F21 1 Series
- BMW F22/23 2 Series
- BMW F10 M5
- BMW F30/F31/F34 3 Series
- BMW F32/33/36 4 Series
- BMW F40/F70 1 Series
- BMW F80 M3
- BMW F82/83 M4
- BMW F87 M3
- BMW F90 M5
- BMW F09 M6
- BMW G20/G21/G28 3 Series
- BMW G22/G23/G26 4 Series
- BMW G29 Z4 Roadster
- BMW G80 M3
- BMW G82/G83 M4
- Toyota A90 Supra Mk5

DISCLAIMER

We do not recommend keeping your valves permanently closed. The restriction of airflow, especially under hard acceleration, may cause damage to your vehicle over time.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.