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776 WHP on Low Boost — And We're Not Done Yet The Mercedes-AMG GT S is already one of the most capable platforms in the AMG lineup. The hand-built M178 4.0L twin-turbo V8 delivers 515 hp from the factory — but with YPG Motorsport's Stage 3 turbo upgrade package, we've just pulled 776.51 WHP on low boost with methanol injection on a Dynojet chassis dynamometer. That's not full power. That's the conservative map. The turbos have significantly more headroom, and full boost numbers are targeting well north of 900 WHP. What Does Stage 3 Mean for the AMG GT S?...

If you've already pushed your Mercedes-AMG past Stage 2 — ECU tune, downpipes, maybe an intercooler — and you're sitting in the 600–700HP range, the next step is turbocharger hardware. The factory turbos are tapped out. But which turbo upgrade makes sense for your build: Stage 3 or Stage 4 Race Turbo? This guide breaks down the differences between the two turbo upgrade tiers YPG Motorsport offers for the M177 and M178 4.0L twin-turbo V8, covering power targets, required supporting mods, cost, and which build path each upgrade is designed for. Stage 3 Turbo Upgrade — The Street and Track...

The Mercedes-AMG M177 4.0L twin-turbo V8 is one of the most tunable production engines ever built. Once you've pushed past Stage 2 ECU calibration and downpipes — somewhere in the 650–700HP range — the factory turbochargers become the bottleneck. The compressor wheels run out of airflow, exhaust gas temperatures climb, and the power curve flattens. That's where turbo upgrades come in. This guide compares the leading M177 turbo upgrade options available in 2026, covering specifications, power targets, pricing, and what each option is best suited for. We sell turbo upgrades ourselves, so we're transparent about that — but this guide...

The Porsche 992 Turbo S produces 640 HP and 590 lb-ft from its 3.8-litre twin-turbo flat-six. It is one of the fastest production cars ever made — 0–60 in 2.6 seconds, quarter mile in 10.1 seconds from factory. Despite these numbers, the 992 Turbo S responds dramatically to ECU calibration. The factory calibration is conservative by design, with significant headroom in boost pressure, ignition timing, and torque delivery. What Is ECU Tuning on the 992 Turbo S? ECU tuning recalibrates the engine management software to optimise boost targets, ignition advance, fuelling maps, variable turbine geometry (VTG) control, and torque limiters....

The Ferrari F154 3.9-litre twin-turbo V8 — found in the 488 GTB, 488 Spider, 488 Pista, and F8 Tributo — is one of the most awarded engines in automotive history. It won International Engine of the Year four consecutive times. From factory, the 488 GTB produces 661 HP and the F8 Tributo produces 710 HP. With ECU calibration, both platforms respond with significant gains in power, torque, and throttle response. What Is ECU Tuning on a Ferrari? Ferrari's factory calibration prioritises emissions compliance, noise regulations, and warranty-safe operating margins. ECU tuning recalibrates boost pressure, ignition timing, fuel injection maps, and...