RENNtech ECU Hand Held Tuner (HHT) for SL 500 | R230 | 320 HP / 355 LB-FT | MY2003-2006 mclaren-mclaren-gt-esr5735104 fall off or fade when

fall off or fade when mounted to the exterior of their vehicle after a few months or while driving at high speeds

Left and Right Front Ducts

Price Per Set (x2 Filters)

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

*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 fall off or fade whenRENNtech 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