RENNtech ECU+ Upgrade | W166 | GLE 450 SUV | 392 HP/463 LB-FT | 3.0L V6 BiTurbo | M276 mercedes-benz-sl-class--231---2017-present--sl65-amg-esr6416839 GT 53 AMG (X290 -chassis)

GT 53 AMG (X290 -chassis)

Matte Finish

Rated by RENNtech (peak @wheel):              665 whp @ 5

ceramic coated  long tube headers feature top of the line big tube 2" diameter T-304 stainless steel tubing

Diverter Valve and Air Filters | Gains: +91HP

RENNtech ECU+ Upgrade | W166 | GLE 450 SUV | 392 HP/463 LB-FT | 3.0L V6 BiTurbo | M276 mercedes-benz-sl-class--231---2017-present--sl65-amg-esr6416839 GT 53 AMG (X290 -chassis)ECU+ Upgrade Up to 392 HP 463 LB FT Gains: +30 HP & +84 LB FT RENNtech tuning products are certified to meet CARB standards in all 50 States. RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980s! Our experience, countless hours of in house research, development and exhaustive testing ensure that our proprietary ECU upgrade offers incredible performance gains and rock