1650cc FIC Subaru WRX('02-'14)/STi ('07+) Fuel Injector Clinic Injector Set (High-Z) (is175-1650h)

Fuel Injector Clinic 1650cc Injector Set — Subaru WRX / STI (is175-1650h)

A 1650cc high-impedance saturated ball-and-seat set in Subaru top-feed fitment, sized for high-horsepower WRX and STI builds on E85 or race fuel. High-Z means they run directly on a saturated driver — no resistor box, no driver module, no additional hardware to mount.

Every set is precisely matched using Fuel Injector Clinic's proprietary Data Match Technology. Each injector is individually serial numbered and the results come on a Data Match Sheet — the most complete flow matching and latency information available. Injectors are flow tested and rated at 43.5 psi (3 bar) at 90°F fuel temperature using CF-16B calibration fluid.

Superior short pulse width control and state-of-the-art matching make these easy to tune and give great drivability, so an engine fueled for four-figure power still idles and cruises properly. Great for E85 applications.

Fitment: 02-14 Subaru WRX, 07-21 Subaru STI.

Roughly 850-900 hp capable on gasoline, closer to 600-650 on E85 at a sane duty cycle. This is the top of the four-cylinder range on a single set — if the build doesn't need that much fuel, the 1440cc set holds a cleaner idle with no meaningful loss in capability.

Sold as a set of 4. Includes all O-rings needed for the factory application and the Data Match Sheet. Covered by Fuel Injector Clinic's lifetime warranty against manufacturing defects.