LOL funny thing the 93 cx m/t doesnt come with a tach. Ive heard that the si or vx gauges w/tach are direct plug n play with my gauge panel and im wondering what id have to do to change it over. Im asking because im shifting to high on my lil motor and only getting about 210-220 mpt to a 10 gal tank thanks in advance for any help!(im supose to get anywhere from 30-40 mpg)