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The ARM Motorsports N63 Charge Pipes replace the factory charge pipes on BMW N63 and N63TU twin-turbo V8 engines. They are CNC machined from 6061 aluminum and add methanol injection ports, which the stock plastic pipes do not have. They also claim increased airflow and are a direct fit. They suit owners tuning an N63 car who plan to run methanol or want sturdier pipes than the factory plastic ones. The trade-off is a narrow audience: shoppers who keep the car stock gain little. Buyers rate them highly, though the sample is small.
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Lowest price we've seen: $177.30 on Nov 13 at Inner Circle Wheels and Performance. Tracked across 12 stores since Nov 13.
Buyers rate the pipes 4.8 out of 5 across 46 ratings.
ARM Motorsports N63/N63TU Charge Pipes are built for N63-powered BMWs and include ports for methanol injection. The ports let you add methanol to the charged air before it reaches the intercooler. This can lower intake air temperatures, allow more boost and advanced timing, and help prevent detonation (knock).
The charge pipes are precision CNC machined from T6061 aluminum. The turbo-side flange is designed to match OE turbos or OE-style upgraded turbos. The methanol ports sit just after the turbocharger, right before the silicone couplers that connect to the intercooler. The pipes fit directly and have an OEM-like fit and finish.
The N63 engine responds well to tuning, and 20 psi of boost can be reached with relative ease. Going above 20 psi often causes detonation, which can trigger a Drivetrain Malfunction and put the car into limp mode. Methanol injection helps by reducing intake air temperature.
