RENNtech ECU Hand Held Tuner | HHT | S 63 AMG | W221 | 534HP/485 LB-FT | 6.3L N/A | M156 | MY2008-2010 audi-rs4--8k---2012-2015--4-2l-v8-fsi-esr2470407 Performance Tests: Vehicle Upgrades 0-60mph

Performance Tests: Vehicle Upgrades 0-60mph 0-100mph 60-130mph 1/4 Mile ET Trap Speed W213 - E63 AMG S Sedan Stock w/o Launch Control

Large RENNtech Motorsports Paddock Umbrella

RENNtech mufflers are lighter in weight compared to the stock units

SL (R230) 55 AMG [2 Filters Required] (HP: 517 | Year: 06 > 08)

High-Gloss finish

RENNtech ECU Hand Held Tuner | HHT | S 63 AMG | W221 | 534HP/485 LB-FT | 6.3L N/A | M156 | MY2008-2010 audi-rs4--8k---2012-2015--4-2l-v8-fsi-esr2470407 Performance Tests: Vehicle Upgrades 0-60mphRENNtech ECU HHT (HandHeldTuner) for the 221 S 63 AMG. Up to 534HP and 485LB FT LB FT. Gains: +16HP & +20 LB 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.