M157 AMG Tuning

The M157 5.5L BiTurbo V8 is one of AMG’s greatest twin-turbo engines — delivering massive torque, strong internals and huge tuning headroom straight from the factory. This engine powers some of the most dominant AMG models of the era, including the W212 E63, C218 CLS63, W221 & W222 S63 (2010–2017), and the W463 G63 (2012–2018). With its twin-scroll turbos and advanced Bosch ECU, the M157 responds incredibly well to remapping and staged hardware upgrades.

At Boost Performance, we offer bespoke M157 ECU/TCU calibration and full supporting upgrade packages, all tested and verified on our World-Class Dyno to ensure maximum performance, drivability and safety — whether on the road, track or Autobahn.

Stage 1 — 600 bhp (608 PS) / 700 lbft (950 Nm)

STAGE 1 — ECU Remap (Stock Hardware)

Gains vary slightly by model & year.

What’s Included

Custom ECU calibration (98/99 RON recommended)
Boost pressure & torque optimisation
Precise ignition & fuel mapping
Throttle response enhancement
Dyno health check + power printout
Optional TCU gearbox tune

Recommended For

Drivers wanting a major power upgrade with no hardware changes. Perfect for G63, E63, CLS63 daily drivers.

Benefits

Huge torque increase
Sharper throttle & faster spool
Stronger mid-range & top-end power
Smooth OEM+ drivability

Stage 1 – ECU Remap

£499 + VAT

£598 inc. VAT

BUY NOW

Stage 2 — 650 bhp (660 PS) / 750–800 lbft (1,050–1,100 Nm)

STAGE 2 — ECU Remap + Downpipes

Required Hardware

Decat or high-flow sports cat downpipes
Optional: uprated intakes

What’s Included

Complete ECU remap for increased turbo flow
Boost limit expansion
Exhaust temperature optimisation
Dyno data logging session
Optional TCU gearbox tune

Recommended For

Drivers who want more power, sound and boost response. Ideal for G63 owners who want stronger low-end torque and better acceleration.

Benefits

Faster turbo spool
Louder, deeper exhaust tone
More aggressive power delivery
Large torque gains across the rev range

Stage 2

£649 + VAT

£779 inc. VAT

BUY NOW

Stage 3 — 700–800 bhp (710–812 PS) / 850–900+ lbft

STAGE 3 — Hybrid Turbos + Full Performance Calibration

Required Hardware

Hybrid turbochargers (various sizes available)
Downpipes (sports or decat)
Upgraded intakes
Larger intercoolers / heat exchanger
Optional: fuel system upgrades

What’s Included

Full custom ECU calibration for hybrid turbos
Boost/torque modelling for high-output operation
Logging sessions across multiple dyno pulls
Safety map strategies (EGT, knock, fuel trims)
Optional TCU tune for higher torque limits

Recommended For

Drivers wanting supercar-level performance with maximum safe output on the M157 platform. Fantastic on G63s for effortless acceleration and massive torque.