A supercharged version of the V6 was used in the 1989–1995 Thunderbird Super Coupé and 1989–90 Cougar XR-7. Initial output of the engine was at 4000 rpm and of torque at 2600 rpm under an 8.2:1 compression ratio. The Super Coupé was the sole user of this engine after the beginning of the 1991 model year when it was replaced by a V8 in the Cougar XR-7. Output of the supercharged V6 was increased to at 4400 rpm and of torque at 2500 rpm for the 1994 and 1995 Super Coupe. To accomplish this, the engine's Eaton M90 roots-type supercharger was given a larger, square-style inlet, a larger attaching inlet plenum, and Teflon coated rotors. Additionally, the engine received larger fuel injectors and an increase in compression to 8.6:1.