i thought it was a 6,8 lb spring used, but from what i hear, some one in dever might hit 4lbs, but drive to sealevel somewhere and it might hit 8lbs put on a 3" downpie turbo back exh. system w/ some intake mods you might hit 11psi.??.
Last edited by joel williams; 01-18-2006 at 05:57 AM.
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