Mercedes-Benz M278 4.7L Bi-Turbo XperTune Performance Software Rennline Expect a much more aggressive

Expect a much more aggressive and natural sounding exhaust note with no interior drone

Replaces the restrictive factory cats with high-performance 200-cell HJS sport catalytic converters for maximum performance and exotic car sound                                                         FEATURES: Fits all 458 Italia / Speciale vehicles (2010-2015)  Improves horsepower and torque by 24 whp and 20 ft-lbs Saves 11 lbs from the vehicle versus factory restrictive cats Constructed with Fabspeed-proprietary 200-cell HJS high-flowing catalytic converters using T304L stainless steel Simple bolt-on

Hawk HT-10 is a proven motorsports compound known for its smooth initial bite

• Non-charging magnet requires included adhesive backed steel pad on phone or case

Sound solutions warranty not applicable for this simple performance part

Mercedes-Benz M278 4.7L Bi-Turbo XperTune Performance Software Rennline Expect a much more aggressivePerformance ECU software upgrade improves horsepower, torque, and driving characteristics of the M278 4. 7L V8 BiTurbo Engine by reprogramming various sensor inputs, air fuel ratios, and boost pressure. FEATURES: Fits all Mercedes Benz 550 M278 4. 7L V8 BiTurbo Vehicles: E Class S Class CL Class CLS Class SL Class M Class GLE Class GL Class GLS Class Stock Varies by Model Tuned +100 HP +110 TQ Fabspeed Motorsport saves your stock factory ECU settings