RENNtech ECU Hand Held Tuner (HHT) for SL 500 | R230 | 320 HP / 355 LB-FT | MY2003-2006 mclaren-mclaren-gt-esr5735104 Lower cost carbon fiber uses

Lower cost carbon fiber uses a wet-layup method which results in components of inferior

CL (C 216) 65 AMG [2 Filters Required] (HP: 612 | Year: 06 > 10)

RENNtech tuning software for Mercedes offers significant gains in horsepower and torque across the vehicle's entire power band

*Applies to all Models

RENNtech ECU Hand Held Tuner (HHT) for SL 500 | R230 | 320 HP / 355 LB-FT | MY2003-2006 mclaren-mclaren-gt-esr5735104 Lower cost carbon fiber usesRENNtech ECU HHT (HandHeldTuner) for the 2220 S 500. Up to 320HP and 355 LB FT. Gains: +18HP & +16LB FT. RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal! Our proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to the ECU. Programming