Mercedes-Benz SLS AMG Gains 20 Horsepower From Renntech's Long Tube Headers [Video]

Renntech is known to maximize performance out of every Mercedes-Benz model imaginable, and this time they’ve taken their talents to the SLS AMG supercar. Their new long tube headers adds 20-hp and 20 lb-ft of torque to the factory 563-hp and 480 lb-ft values. These long tube headers were engineered within Renntech’s state-of-the-art facility and features tri-metal, 200-cell catalytic converters and are ceramic coated to reduce heat in the engine bay.

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