The Injen IS1900P is a polished short-ram intake for the 1995-1996 Nissan 240SX L4-2.4L, the S14 chassis with the KA24DE engine. Its T6-6061 mandrel-bent aluminum intake tubing is designed to keep airflow smooth, and it feeds a fully serviceable Injen SuperNano-Web dry air filter. The short-ram layout is compact enough for even the tightest of engine bays.
Compared with the factory airbox setup, this kit is meant to reduce restriction on the intake path, and the manufacturer states it requires no tune required, so you avoid a reflash or tuning bill for a bolt-on upgrade. Injen's Limited Lifetime Warranty is worth weighing against cheaper generic pipes when you plan to keep the car for years. For buyers searching for a 1995 240SX S14 KA24DE intake, a polished IS1900P with a no-tune claim and a dry SuperNano-Web filter is a straightforward, reversible way to upgrade.
The manufacturer states this intake is built to fit the 1995-1996 240SX 2.4L with no tune required.
The manufacturer's documentation lists an Injen tuned filter (#1014) as part of the kit, and the SuperNano-Web dry filter is described by the manufacturer as fully serviceable.
Per the manufacturer, the EIS1900 extension is sold separately and was used alongside this kit during dyno testing. Owners on user forums explain that a short-ram filter sits in the engine bay, while a cold-air system moves the filter element out of it.
The manufacturer says installation requires some mechanical skills and recommends a qualified mechanic if you are unsure, and it advises against working on the intake while the engine is hot. Owners on user forums report the swap takes about 40 to 45 minutes for someone with basic mechanical skills. The work starts by unclipping the mass airflow sensor harness and loosening the throttle body duct clamp, then removing the airbox held down by a single 10mm screw. Expect to use pliers for the hose tension clamps, and be ready to deal with the crankcase ventilation hose, which needs to be reconnected to the new intake. The manufacturer also notes that the process may require removing a radiator fluid line that can be hot.
