You guys get descent mileage. I used to get 28 to 30+ on the highway in my V-6 Contour, but the V-6 Mystique is getting about 22mph no matter where/how I drive. Same computer code, new Autolite plugs/wires just like the Contour, UIM/LIM has been B-12'd a couple of times, good maintenance on everything else.
I've got mystery mod, no CELs, & SVT exhaust. I've tried stock air filter setup with various filter brands, and am now running open element for the last 8 months or so. No difference.
I'm gonna try swapping out the fuel pressure regulator for a fresh one & performing a full UIM/LIM rebuild. Soon as I get time...
