PERRIN Short Shifter Adapter - Subaru STI VA Shift Knobs Allows for smooth flow and

Allows for smooth flow and effective cooling of the charge air entering the engine

This allows users to take advantage of the precise factory resistor calibration when a sensor is new but then allows for free-air calibrations if the user desires when the sensor ages

which worsens as boost is increased

powerful and easy to use

Ideal for Professional Sports Car Racing

PERRIN Short Shifter Adapter - Subaru STI VA Shift Knobs Allows for smooth flow andFits 2004+ Subaru STI The Perrin STI Short Shifter Adapter is a new and unique way of shortening your shifters throws with out just cutting down the length of the shift rod. A major plus is the built in throw adjustability; from 10% 50% reduction in throw with the use of single tool! Installation is the quickest around! No messing with the reverse lockout cable, or disassembling a bunch of parts, or jacking up the car. This saves you time and money