For a cost-effective flow increase option for you GU Patrol, our 3.5” lid adaptors may be a good solution for your application. The Factory lid has a very restrictive design, as such being power robbing component in the standard set up. Our Lid adaption will increase the factory Airbox flow capacity from 410CFM to 522CFM*. This substantial increase is achieved by allowing the full cross section of a 3.5” mandrel bend to be incorporated in to the outlet of the standard Airbox. This requires the modification of the factory lid to fit. Plumbing is back into the factory ducting to the turbo on both TD and ZD variants.
(*Air Flow data should be used comparative reference data only. Comparison carried out on the same flow bench on the same day for accurate reference. These may not absolute values).