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The carbon fiber airbox was designed
GL 450 (W164) Stock Performance:
larger tube diameters-measuring not 55 but 60 mm-and reduced power-consuming back pressure
Stage I Turbo Upgrade: RENNtech lightweight forged billet turbo wheel features a larger-than stock impeller (inlet side) and an increase in the turbine trim (exhaust side)
RENNtech M276 Biturbo ECU Upgrades are TÜV approved
RENNtech Porsche 997 GT3 RS 3.8L ECU Upgrade (462 HP / 332 LB-FT) mercedes-benz-c-class--204-sedan---2008-2014--c-63-amg-esr4188940 The carbon fiber airbox wasRENNtech Porsche 997 GT3 RS 3. 8L ECU Upgrade. Up to 462HP and 332LB FT. Gains: +12HP & +15LB FT Our proprietary Porsche ECU upgrade offers rock solid performance from RENNtech, the foremost tuning authority on Bosch and Siemens engine control units. These same units are utilized in Mercedes Benz vehicles, which RENNtech has been tuning since electronic engine management started to show up in vehicles during the mid 1980's, though our proprietary