RENNtech | ECU Upgrade | X204 | GLK 350 BlueEFFICIENCY | 308HP/285LB-FT| 3.5L V6 NaturallyAspirated | M276 porsche-cayenne--9pa----1-gen--turbo-esr3181428 ceramic coated long tube headers

ceramic coated  long tube headers feature top of the line big tube 2" diameter T-304 stainless steel tubing and are manufactured from the same high quality materials used on all RENNtech headers

Porsche 991

3 series (F30) 335 i 3

E 63 AMG (S212 | Wagon | PFL MY2012-13 | RWD | M157 | 5

RENNtech | ECU Upgrade | X204 | GLK 350 BlueEFFICIENCY | 308HP/285LB-FT| 3.5L V6 NaturallyAspirated | M276 porsche-cayenne--9pa----1-gen--turbo-esr3181428 ceramic coated long tube headersRENNtech ECU Upgrade for 204 GLK 350 Blue Efficiency. Up to 308HP and 285LB FT. Gains: +6HP & 12LB FT RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980's! Our experience, countless hours of in house research, development and exhaustive testing ensure that our proprietary ECU upgrade offers incredible performance gains and rock solid daily driver reliability. RENNtechs