BMW 3 SERIE M3 /M4 431HP INTERCOOLER yet uses their car in

yet uses their car in the harsh real world environment

Will not cause CEL (check engine light)

Please check your local laws and regulations before ordering any replacement for your vehicles catalytic converters

Since the components are in perfect harmony with one another

BMW 3 SERIE M3 /M4 431HP INTERCOOLER yet uses their car inIn the case of the BMW 3 serie M3 431hp engine, our Chiptuning file is tailored for more power and torque, reduced fuel consumption, smoother acceleration and improved throttle response. By optimising the torque curve the BMW 3 serie M3 431hp engine produces more torque at lower RPM. This also means that you can change gear earlier, so your BMW engine will run at lower revs and therefore more efficiently. Stage 1 : 500 HP 498 FT LBS Stage 2 : 520 HP