M838T RSS

McLaren's Twin-Turbo V8 Engines — M840T and M838T McLaren's road cars are built around two closely related twin-turbocharged 4.0-liter V8 engines: the M838T powering the 570S, 570GT, and 540C, and the M840T powering the 720S, 765LT, and their derivatives. Both engines are flat-plane crank designs co-developed with Ricardo, producing between 533 and 765 horsepower depending on the application. These are some of the most sophisticated production engines ever built, and they respond remarkably well to ECU tuning. But McLarens are complex machines with hydraulic suspension, electrohydraulic systems, and tight packaging that creates unique maintenance challenges. Knowing these issues before tuning...

McLaren's Twin-Turbo V8: One Engine Family, Two Eras of Power Every McLaren road car since the MP4-12C has been powered by a single engine family — a twin-turbocharged, flat-plane crank V8 designed exclusively for McLaren and built by Ricardo in Basildon, England. There is no shared platform with any other manufacturer. No borrowed block from Mercedes or BMW. This is McLaren's engine, purpose-built for mid-engine supercar duty. The family splits into two generations: the M838T 3.8-liter that powered everything from the 12C to the 600LT, and the M840T 4.0-liter that brought the 720S and 765LT into 700+ HP territory. Understanding...

McLaren 600LT ECU Tuning Guide — M838T 3.8L Twin-Turbo V8 The McLaren 600LT is one of the most capable track-focused supercars in the McLaren Sport Series lineup. Powered by the proven M838T 3.8-litre twin-turbocharged V8, the 600LT delivers 592 HP and 457 lb-ft of torque in factory form — but with professional ECU tuning, this engine has significantly more to give. Whether you are looking for a mild Stage 1 remap or an aggressive Stage 3 build, this guide covers everything you need to know about unlocking the full potential of your McLaren 600LT. At YPG Motorsport, we specialise in...

The McLaren M838T 3.8-liter twin-turbo V8 is the engine that defined the modern McLaren era — powering the 570S, 570GT, 540C, 650S, and MP4-12C. These mid-engined supercars produce extraordinary power from the factory, but the restrictive catalytic converters downstream of each turbocharger leave significant performance on the table. Replacing the factory downpipes is the single most effective bolt-on modification you can make to the M838T platform.This guide covers everything you need to know about upgrading the downpipes on your McLaren: catless race downpipes versus high-flow catted options, real-world power gains, exhaust sound transformation, fitment across the entire M838T lineup, installation...

McLaren 570S and 650S/MP4-12C catless downpipes guide. Power gains, sound transformation, fitment differences, and Stage 2 build details. SS304 stainless steel. Free worldwide shipping.