E85 Z4 Performance Software 3.0 (2003-05) 330i The Active Autowerke F3x 335i

The Active Autowerke F3x 335i Gen 2 BMW Rear Exhaust System provides an increase in horsepower

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AFlow proprietary precious metal loading technology ensures greatly reduced emissions

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and get that cool whoosh sound as your machine spits out excess inlet pressure

E85 Z4 Performance Software 3.0 (2003-05) 330i The Active Autowerke F3x 335i***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*** Active Autowerke offers unparalleled performance software. Through careful remapping of the factory BMW DME tables, various elements such as ignition timing, fuel delivery, and part