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TCU (transmission control unit) upgrade in addition to our higher efficiency intercooler pump
BOV | Blow-Off Valve Adapter
RENNtech M137 V12 ECU Upgrades are TÜV approved
The pipes have to be returned in good condition
Intermediate ECU Upgrade | GLC 63 AMG S and non-S | Up to 574 HP / 612 LB-FT | Gains: +48 HP & +80 LB-FT
RENNtech ECU Upgrade for ML 320 CDI (W164- 253 HP / 464 LB-FT) porsche-911--992---2018-present--gt3-touring-esr9604671 TCU (transmission control unit) upgradeRENNtech ECU Upgrade for 166 ML 320 CDI. up to 253HP and 464LB FT. Gains: +23HP & 75LB 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