RENNtech ECU Upgrade for SL 550 (R230- 402 HP / 405 LB-FT) porsche-911--996---1997-2005--gt3-rs-esr9477836 CLASS E SW (S 211)

CLASS E SW (S 211) 320 V6 [2 Filters Required] (HP: 224 | Year: 03 > 05)

please contact our sales department prior to order

X290 - AMG GT 4-Door Coupe AMG GT 43 4-Door Coupe | MY2019+ | *Needs to be equipped with optional performance exhaust/factory valves*

GT63 AMG S 4MATIC+ (MY2018+ | W213 | M177 | 4

RENNtech ECU Upgrade for SL 550 (R230- 402 HP / 405 LB-FT) porsche-911--996---1997-2005--gt3-rs-esr9477836 CLASS E SW (S 211)RENNtech ECU Upgrade for 230 SL 550. Up to 402HP and 405LB FT. Gains: +20HP & 14LB 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 takes only a few