RENNtech Porsche 997 GT3 RS 3.8L ECU Upgrade (462 HP / 332 LB-FT) audi-s3--8p---2006-2012--2-0l-tfsi-esr5566206 Rated by Mercedes-Benz: 463 HP

Rated by Mercedes-Benz:                        463 HP @ 5

Dyno measured by RENNtech (peak):                681 HP @ 6

CL (C216) 500 Blue Efficiency 4-matic [2 Filters Required] (HP: 435 | Year: 10 > )

This front splitter is a fully functional aerodynamic component as well as an aggressive exterior enhancement on the muscular CLS

RENNtech Porsche 997 GT3 RS 3.8L ECU Upgrade (462 HP / 332 LB-FT) audi-s3--8p---2006-2012--2-0l-tfsi-esr5566206 Rated by Mercedes-Benz: 463 HPRENNtech 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