The first equal-length exhaust manifold ever built for the M177. Measured back-to-back on the same car and tune: up to +66 hp in the midrange, +60 lb-ft of peak torque, full boost 400–800 rpm sooner — and not a single rpm below stock. The physics, the dyno curves, and why we 3D print it: geometry first, then the process that reproduces it exactly.
How much power is the M177 intercooler system giving up to heat soak — and how much can better radiators recover? We logged back-to-back 60–130 mph pulls in Texas summer heat, stock vs. our Stage 1, 1.5, and 2 setups. Full data inside.
