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One of the keys to achieving power is the correct ratio of fuel for a given quantity of air. Either too much or too little fuel results in an engine that is down on power, delivers poor economy and has a big question mark against its long term durability. The primary job of the engine [...]

It may come as a surprise to many, but the theory behind Subaru performance engine tuning is not nearly as complicated as it is made out to be, especially when dealing with production based equipment. Engine tuning is neither a black art, nor is it a form of magic. Extracting power from a Subaru WRX [...]

Cam/Crankshaft position sensors – provides information from which the ECU can determine the exact rotational position of the engine, RPM and rate of acceleration. This is used to enable sequential fuel injection, or the control of individual fuel injectors, in addition to sophisticated miss-fire detection functions. Base ignition timing is also calculated from these two [...]