JR Boost Upgrade Kit with PowerCard! :: 94-97 1.8

The Jackson Racing Boost Upgrade gives your supercharged Miata a healthy shot of adrenaline! By spinning the supercharger faster, boost pressure is increased. The result is up to a 15% increase in horsepower and torque! When upgrading the boost on Supercharger Systems tuned with PowerCard, any additional fuel necessary is already built into PowerCard's fuel tables. All Jackson Racing boost upgrade require the use of a Boost Timing Control Unit. Boost timing units provide the critical adjustment of timing, based on boost and RPM, essential in preventing engine damage. Best results in power and drivability were achieved with our Jackson Racing Boost Timing Controller. All kits include boost crank pulley and belt. For Miata's with the 'Old Style' fuel management the upgrade kits include PowerCard. This fits 94-7 with Air Conditioning...and with or without power steering. SORRY, OUT OF STOCK