RENNtech | ECU HHT-Hand Held Tuner | R230 | SL 600 | 625 HP / 745 LB-FT | 5.5L V12 BiTurbo | M275 | MY2004-2006 porsche-911--992---2018-present--targa-4-esr9249197 ECU+ Upgrade | Up to

ECU+ Upgrade | Up to 669HP / 734LB-FT | Gains: +65HP & +88LB-FT

After plugging the HSM into the ODB2 port

The diffuser is available in both matte and gloss UV protected finishes

The module plugs directly into the OBD2 port and delivers the file you choose directly to the ECU

RENNtech | C/R 190 | AMG GT (Pre-Facelift) | Carbon Fiber Front Splitter

RENNtech | ECU HHT-Hand Held Tuner | R230 | SL 600 | 625 HP / 745 LB-FT | 5.5L V12 BiTurbo | M275 | MY2004-2006 porsche-911--992---2018-present--targa-4-esr9249197 ECU+ Upgrade | Up toRENNtech ECU HHT (HandHeldTuner) for the 230 SL 600. Up to 625HP and 745 LB FT LB FT. Gains: +133HP & +155LB 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.