my 1990 is only producing 10lbs of boost. I've read that stock boost is 10-12
my current mods are:
10% sc pulley
raised top
cold air intake
mustang headers
2.5 exhaust into a dual in dual out resinator and summit Race mufflers (no cats)
its my understanding that the early model m90 pulley is smaller then the later model ones. so is the 10% pulley still 10% overdrive on the earlier models?
also for future pulley combinations i would like to get a 10% js pulley. when I do this should i change my sc pulley to a 5% to keep the supercharger operating efficiently? I think I would like to use the 10% js pulley to allow for 20% overdrive in the future when I am able to upgrade my supercharger.
my current mods are:
10% sc pulley
raised top
cold air intake
mustang headers
2.5 exhaust into a dual in dual out resinator and summit Race mufflers (no cats)
its my understanding that the early model m90 pulley is smaller then the later model ones. so is the 10% pulley still 10% overdrive on the earlier models?
also for future pulley combinations i would like to get a 10% js pulley. when I do this should i change my sc pulley to a 5% to keep the supercharger operating efficiently? I think I would like to use the 10% js pulley to allow for 20% overdrive in the future when I am able to upgrade my supercharger.