Active Autowerke High Performance 42mm Blow Off Valve wo Flange | BOV | E82 135 N54 1M E9X 335 Color:w/o Horn * Performance gains when paired

* Performance gains when paired with Active Autowerke F8X Rear Exhaust Section

Active Autowerke has released our F8X-specific exhaust tips

When you purchase the software

You can make your selection based on size

Erases current DME adaptions (DME will now read and adapt strictly from new tuning maps)

Active Autowerke High Performance 42mm Blow Off Valve wo Flange | BOV | E82 135 N54 1M E9X 335 Color:w/o Horn * Performance gains when paired***Before your order ships you MUST sign and return the Off Road Use Only Waiver available HERE. Please email, fax or take a photo of the completed form. You can email it to your sales rep or to info@activeautowerke. com and you can fax it to us at (305) 253 8921*** A blowoff valve (BOV), bypass valve or dump valve is a pressure release system present in most turbocharged engines. Its purpose is to prevent compressor surge, and reduce wear on the