Active Autowerke High Performance 42mm Blow Off Valve wo Flange | BOV | E82 135 N54 1M E9X 335 Color:w/o Horn You Need This For Your

You Need This For Your N55 Powered X-Drive BMW

Having installed a CSL style intake system dramatically changes the air intake charge set-up

year-2010-make-bmw-model-z4-35i

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 You Need This For Your***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