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Reprogram control units in vehicle for different final drive ratio over factory/stock
and appearance may differ form set to set
RENNtech tuning software for McLaren offers significant gains in horsepower and torque across the vehicle's entire power band
Up to 380HP and 395 LB-FT
Smooth rollerball Carbon Fiber black pen has a balanced weight and is easy sign and write with across any type of paper
RENNtech ECU Upgrade | GL 550 | X166 | 480HP / 605LB-FT | 4.7L BiTurbo | M278 Engine lamborghini-gallardo--2003-2013--esr8960284 Reprogram control units in vehicleECU Upgrade 480HP 605LB FT Gains: +32HP +67LB FT Our intermediate level ECU upgrade for the Mercedes M278 engine still offers huge gains in performance across the entire RPM range, but with a slightly reduced peak HP and torque from our standard tune. This is ideal for customers who want increased performance in their daily driver without worry of extra strain on driveline components or for areas and countries with extreme altitudes, temperatures or
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