A'PEXi S-AFC Engine Management - Dyno Cell

The Dyno Cell
With the S-AFC in place, the keys were handed to master tuner Aries Dizon, who strapped the car to the dyno and prepared to outdo the Lexus engineers. Whether you hold the viewpoint that the IS 300 is a highly engineered piece of machinery that doesn't need much else, or the position that the addition of an aftermarket intake and exhaust system sufficiently changed fuel demands to warrant fine tuning - either way you look at it, the S-AFC worked wonders. It shifted the entire power curve upward throughout the tested powerband, with a low median gain of 6 to 8 hp and maximum gains of about 13 to 14 hp. The maximum power output jumped from 166.8 to 176.0 hp turning the rear wheels. The torque curve naturally followed the same order, with an even gain of about 10-12 lb-ft across the mid- to high-speed portions of the powerband.

Digital fuel control is here to stay. No more tinkering with carburetor jettings, no more dangerous guesswork with upgraded injectors or high-flow fuel pumps, not to mention dubious pressure-sensitive regulators. The APEXi S-AFC makes all of this obsolete. Since the S-AFC modifies the ECU signal instead of replacing OEM fuel components, it can be used on a wide variety of applications. From mildly tuned, daily-driven vehicles (like our test bed IS 300) to weekend drag warriors with turbos or nitrous, the S-AFC can benefit them all-no car has too little or too much.