Race Car Talk

Previously we heard of the Mercedes SLR Mclaren 722hp, and now by the popular demand the tuner has re-tuned the 5.4L supercharged engine bringing power up to 740 horsepower.

For revised tuning package Renntech have reworked the ECU s/f and included the less limiting motorsports-style exhaust system to obtain additional ponies to a new Renntech Mark, ten-spoke, three piece performance wheels.

Source: Super Car Blog