RENNtech HHT ECU Upgrade for ML 350 BlueTec (W166- 260 HP / 485 LB-FT) ferrari-f355--1994-1999--esr4582803 R1 Performance Package for 199

R1 Performance Package for 199 - SLR McLaren

Includes ECU Upgrade and Flat Top Air Box

3rd generation Diverter Valve RENNtech is able to add up to 91 HP and 132 LB-FT to the 5

Increased speed limit

RENNtech HHT ECU Upgrade for ML 350 BlueTec (W166- 260 HP / 485 LB-FT) ferrari-f355--1994-1999--esr4582803 R1 Performance Package for 199RENNtech Hand Held Tuner ECU Upgrade for 166 ML 350 BlueTec. up to 253HP and 485LB FT. Gains: +20HP & +30LB 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.