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I was wondering if anybody can give me any ideas on upgrading my 2006 cobalt ss. I always owned V8 muscle cars but decided to go a different route this time. I have a stock cobalt, and I gotta say I am totally lost. My first upgrade I wanted to do is a stage 2 kit but with a stage 3 pulley? what do you recommend or can I build my own kit? any ideas where I can get the best prices? thanks you guys!
 

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In my opinion, dealer stage upgrades are a bit overpriced....

You can do, I guess what you call a stage 3 pulley, a smaller pulley depending how much power you want to gain from the LSJ. You would need to upgrade: injectors, spark plugs and tune the ecu to compensate for the extra fuel and air coming in. Get a couple of gauges to monitor the AFR and you should be set. How much power are you planning to achieve??
 
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