Almost sounds like it has a miss, try doing a power balance test. If you search for those exact words I think I've explained it all on here before.
edit: This is where I talked about it, not a super great explanation but if you're mechanically inclined you should be able to figure it out
http://www.aleromod.com/forums/showt...balance+tes t
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2003 Alero GL2 LA1: pacesetter cat back, Energy Speed WAI, Magnaflow downpipe/cat, tinted tail lights, and polished letters on intake manifold.
1987 Honda Rebel 450
1967 Buick Riviera 430 Wildcat: roadworthy but needs restoration.
Last edited by Lucalare : 03-23-2011 at 02:00 AM.
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