#BMWOBDTUNING. Gone are the days where you risk damaging your ecu when remapping your cherished Fxx range bimmer.

BMW has always been a ecu open job and board flipped or a hole drilled and plugged. We have the equipment to TUNE by OBD. Not only avoiding ecu damage during the process but also water ingress after the event.

The 4 series with the diesel engine is no exception to this, this 420d M sport in one of the best colours offers up to 45bhp and 80nm increases , it would be rude not to