SL65 AMG, GoodSpeed Makes BIG power with the BIG DOG!

GoodSpeed takes the extra step when fine-tuning AMG’s big dog!

While some shops are limited by their equipment, GoodSpeed is not! We are fortunate enough to own the most accurate dyno in North America, the same dyno the Mercedes-Benz factory uses for Research and Development. This provides us a distinct advantage. We work directly with RennTech Mercedes, sharing feedback and data that no one else can. No fake numbers here, our MaHa dyno will measure exact crank horsepower numbers. As proof of it’s accuracy we tested a stock SL65 and repeatedly measured 601 flywheel horsepower. The factory SAE rating is 604hp, a variance of only 0.5%! Our ability to graph not only boost and A/F but also intake temps (pre and post intercooler), throttle position, oil temperature, and timing makes for precise data analysis. This data can be overlaid on horsepower, torque, and drivetrain loss curves. With this data RennTech’s talented engineers can fully refine the vehicle’s tune.

For tuning perfection GoodSpeed Performance Lab is the place for your Mercedes.

Power Achieved with RennTech stage 2!

677.8 crank Hp +74hp
918.0 crank Tq +180

All numbers are actual crank, not estimated

GoodSpeed is Arizona’s only major stocking RennTech distributor, and is a RennTech fully authorized tuning facility. Stop by or call us today to discuss the creation of the Mercedes of your dreams.