ISR Performance Intake Kit - Nissan SR20DET to suit RS3871 turbo

Once you move to an RS3871 or another 3 inch inlet turbo on an SR20DET, the stock intake piping no longer fits. The ISR Performance intake kit for the Nissan SR20DET solves that with a 2.75 inch MAF section, silicone couplers and a high flow filter, giving the turbo a clean, unobstructed path for incoming air on an S13 or S14 240SX.

Kit components

• 2.75 inch MAF section for the factory mass airflow sensor
• Silicone couplers to step from the MAF section to the 3 inch turbo inlet
• High flow air filter

Why an intake kit matters on a turbo upgrade

A larger turbo draws more air, and a restriction before the compressor costs boost response and can lead to compressor surge. Properly sized intake piping with smooth silicone transitions keeps the inlet open and makes the MAF reading more consistent, which helps with tuning. It also looks far cleaner than a stack of mismatched reducers.

Fitment

• Nissan SR20DET in the S13 and S14 240SX
• Designed for use with an ISR top mount or bottom mount manifold
• Fits the RS3871 and other turbos with a 3 inch inlet

Installation notes

This kit is built around the ISR manifold and turbo combination, so turbo placement should match for the couplers to line up. Confirm your turbo inlet diameter is 3 inches before ordering.

Legal only for use in competition vehicles which may never be registered, licensed, and/or used on public streets or highways; and also for use in other exempted vehicles.

All ISR Performance products are designed for off-road use only.