Pay in 4 interest-free payments of $372.50 Learn more
Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
RENNtech M157 Biturbo ECU+ Upgrades are TÜV approved
9 seconds @ 129 mph with 0-60 mph coming in 3
Our numbers will be dependent on conditions and fuel quality
2018 - present G550
We typically see higher baseline numbers than claimed by the factory
RENNtech ECU+ Upgrade | C217 | S560 | 584HP/642LB-FT | 4.0L V8 BiTurbo | M176 | MY2018-2021 aero-intakes RENNtech M157 Biturbo ECU+ UpgradesECU+ Upgrade Up to 584 HP 642 LB FT Gains: up to +100 HP & +102 LB FT RENNtech tuning products are certified to meet CARB standards in all 50 States. RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal! Our proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file
US$ 6690.15
US$ 549.67
US$ 1680.00
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