Supercharger and underdrive pulley's

spederman

Member
Apr 13, 2005
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I just got a Vortech Supercharger SQ trim. I have heard that you have to put back the stock pulleys. Well, i bought my car with underdrives on it so that isnt an option unless i find some for cheap.

I have heard you can have underdrive pulleys but it wont spin the S/C fast enough to get max boost. Well, i am not going to have a intercooler to loose any boost (will have snow meth inj kit), and i do have a AFM power pipe. I dont really want to go more than 8-9 PSI boost for safety anyway. So if i use my underdrive's and have the powerpipe, will i be able to still hit 8 PSI of boost? Or should i just find some stock pulleys?