Mitsubishi Vr4 FAQ

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Caps - Mitsubishi Parts Database
When Mitsubishi look up parts for your car this is the parts system they use to look up part numbers for you. Useful for looking up your own part numbers. Also helps compare/cross refrance parts with other mitsubishi models.

Facelift & Pre-facelift - Series 2 and Series 1 Legnum, respectively
The Series 2 Legnum VR4 was produced from 1998 to 2002. It's called the 'facelift' because while most of the car is identical to the Series 1 (which ran from 1996 to 1997), there are slight external differences which are the most obvious changes. These included a redesigned front bumper, including a pair of twin fog lights instead of the single light pair on the Series 1, and a redesigned tail lamp assembly and plastic tailgate finishing running between the lights on the Series 2.

Non-cosmetic changes include two slightly different models in the Series 2, the Type V and the Type S. The type S includes AYC just like the Series 1, while the type V does not.

Other differences include... (feel free to add more differences here)

MMCS - Mitsubishi Multi Communications System
The MMCS unit was a factory option in the Galant and Legnum VR4. It includes touch-screen control of a number of functions, including the factory airconditioning system, Japanese television and radio station selection, Japanese GPS and satellite navigation system etc.

AYC - Active Yaw Control...
is an automobile feature designed by Mitsubishi Motors, first introduced in the Mitsubishi Lancer Evolution IV. It has been included in certain models of every subsequent generation, and was also used in the VR-4 variant of the 8th generation Galant and Legnum.
Active Yaw Control is based on a computer-controlled rear differential which can actively split torque based on input from various accelerometers in the vehicle measuring longitudinal and lateral g forces, steering, brakes and throttle position. Where ABS brakes are fitted they too are included in the input parameters. It accomplishes this via two hydraulic clutches which can limit torque on individual axles. AYC is a performance-oriented system which aims to increase cornering speeds.
A much deeper explanation is at http://www.lancerregister.com/faq/G04/g04.html

INVECS & INVECS-II (Intelligent and Innovative Vehicle Electronic Control System)
The first generation of INVECS debuted in the 7th generation of the Mitsubishi Galant which was introduced in 1992. An array of sensors continuously monitored six parameters and, using "fuzzy logic", adapted the shift patterns in the automatic gearbox "on the fly" according to the driver's style. Despite sharing its name with the previous system, INVECS-II was a radical development, based on Porsche's Tiptronic semi-automatic transmission technology. As with Porsche's version it allowed for either a fully automatic mode, or a clutchless semi-automatic mode if the driver wished to control the up- and down-shift points. It also offered the same Adaptive Shift Control software which monitored and "learned" the driver's habits over time and adjusted the smoothness or aggression of the gearshifts to suit his style. INVECS-II can be reset by disconnecting the battery for approx 30 seconds.