Renntech 335d Diesel tune hits 311 horsepower to the wheels and offers 24 month warranty for $1100
Renntech is branching out to other markets from their traditional Mercedes tuning and they have several ECU tunes now available for BMW vehicles. The Renntech 335 diesel tune puts down an impressive 311 horsepower to the wheels along with a tremendous 432 wheel torque. The ECU has to be sent in for the flash unless one is local. A 24 month warranty is also included in the $1100 price. This tune should be applicable to the X5 diesel as well in the United States.