Cast Turbo Inlet Pipe for Audi B9/B9.5 SQ5 3.0T

The Integrated Engineering IEINCZ4 turbo inlet pipe is engineered to significantly increase airflow to your Audi B9/B9.5 SQ5 3.0T engine. Constructed from cast aircraft-grade aluminum and precision CNC machined in-house, this pipe maximizes internal volume and shape for optimal performance. With a 4" effective inner diameter and an 85mm inlet transitioning to a 66mm turbo side, the IEINCZ4 provides a substantial flow increase over the stock plastic design. Back-to-back flow bench testing demonstrates significant gains, and when combined with an IE cold air intake system, it can deliver up to 19 HP and 21 ft-lbs of torque over stock. It features adaptable turbo flanges with O-ring seals for a leak-free connection and supports high horsepower builds. For easier installation in tight spaces, it incorporates a slip-fit retainer post for the lower bolt. Installation is straightforward and typically takes about an hour. However, fitment is not verified on non-IE brand intakes without modification, and stock intakes may require an optional silicone adapter. Turbo upgrade adapter rings are sold separately.