Active Autowerke High Performance 42mm Blow Off Valve Replacement Diaphragm | BOV | E82 135 N54 1M E9X 335 MS45 but it is better knowing

but it is better knowing the horsepower numbers under such conditions

BMW factory style hardware makes a truly easy installation with no need for cutting or re-welding

Active Autowerke's new F8X exhaust tips were developed specifically for the latest-generation M3/M4

Through careful remapping to the BMW DME

OBD Flashing Option to flash it yourself (adds Femto software and cable)

Active Autowerke High Performance 42mm Blow Off Valve Replacement Diaphragm | BOV | E82 135 N54 1M E9X 335 MS45 but it is better knowing***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*** Replacment diaphragm for your Active Autowerke 42mm Blow Off Valve!