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Took my 2005 auto to the track yesterday and ran a 13.07 at 107 mph. I've done the air box mod and had magnaflows and an x-pipe welded to the stock exhaust. I also have a preditor tune for what that's worth. It was about 70 deg at the time. Does this sound about normal? I was really wanting to get into the 12's but it just wasn't my night. Thanks for your comments.
 

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Thats a good time for a stockish 05 Auto
 

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yep, they are fast for a production street car. you could do much more with it. should be easy to get into the 12s or better. do you have plans for additional changes? I'd get some headers, better tires and suspension. this is dependent upon budget limitations of course.
 
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