RENNtech ECU Upgrade for C 350 | W203 | 290 HP / 278 LB-FT | MY2006-2007 bmw-3-series--e90-e91---2005-2012--335d-3-0-l-i6-twin-turbo-diesel--m57n2--esr8657637 ): 362 HP @ 5

):                               362 HP @ 5

RENNtech products are manufactured to perfectly match the stock AMG GT R exhaust system and include all necessary mounting hardware and clamps

which will be credited upon return of OEM turbo tubes to RENNtech

The SLR McLaren Performance Exhaust consists of RENNtech Stainless Steel Sport Mufflers

A refined blend of heritage and craftsmanship

RENNtech ECU Upgrade for C 350 | W203 | 290 HP / 278 LB-FT | MY2006-2007 bmw-3-series--e90-e91---2005-2012--335d-3-0-l-i6-twin-turbo-diesel--m57n2--esr8657637 ): 362 HP @ 5RENNtech ECU Upgrade for 203 C 350, up to 290HP, 278LB FT. Gains: +22HP & 20LB 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. RENNtech tuning software for