I just installed the steeda cold air and down loaded the sct x3. The lady gave me a free tune ready to be installed, all that i had to do is just follow the instructions. My question is when I get up in high rpms, then shift to 2nd or 3rd gear I can hear the lifters rattle more now than before I installed the mods Why is this happening? even after I put super unleaded gas in it.

 

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I would unistall it and see if problem goes away.