Another returning customer in his new 335xD for our DR performance upgrade, our package comes with hi-flow downpipe mod / Intercooler upgrade / DR Ecu & Tcu software. Once all mods were completed we managed to peak over 417Hp adding an impressive 111.2Hp offering instant throttle response, sub 4secs 0-60, smooth midrange delivery with the extra torque, and no excess smoke under load due to precise data logged calibration.