A year ago Renntech unveiled their Performance PKG1 package for the Mercedes-SLR which included upgraded intercoolers, larger crankshaft pulley and custom ECU software that delivered 722 hp.
According to the tuner, due to the demand of Renntech customers, the company released the Performance PKG2 for the SLR, which includes a motorsports-style exhaust system and new ECU […]
Continue reading " Mercedes SLR - Renntech release Performance PKG2 "
