BMW G8x M3, M4 & G2x M340i, M440i Stand Alone Auxiliary Fuel System Pump Selection:AFS.425 2017+ Audi B9/9

2017+ Audi B9/9

and the longer hose from the intercooler to the charge pipe on the cold side

With a modular plug-and-play design

ARM S55 Resonated Downpipes

improved torque

BMW G8x M3, M4 & G2x M340i, M440i Stand Alone Auxiliary Fuel System Pump Selection:AFS.425 2017+ Audi B9/9The Precision Raceworks BMW G8x M3, M4 & G2x M340i, M440i Stand Alone Auxiliary Fuel System is the highest performing and most stable low pressure fuel system on the market! Forget about how things have been done and embrace the benefits of dedicated fueling for your port injection! Since direct injection came out for BMW, enthusiasts have been adding port injection. With this came the need to upgrade the low pressure fuel system to keep up.