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Discussion Starter #1 (Edited)
hi i have an 07 cobalt ss 2.0 supercharged with the gm stage 2 kit
have lots problems and now there is a big tickin noise or knock coming from motor runs fine just makin that noise pretty good can hear when drivein now its not doing any one know whats going on
 

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If it comes and goes, could just be you ecm hasnt adjusted the timing yet too. Does it tap all the time or just sometimes? I have heard a little something like that off and on since the car was brand new. I think mine is a tiny bit of knock until the ecm adjusts.
 
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