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3,456 Posts
I'm new to the forum so I'm sorry if this has been asked before.
I just installed a cold air intake and new iridium spark plugs. After work was done it idles really rough, drove for 70 miles no change. Re installed the original plugs idled a little better. is there a way to reset to computer? Or am I missing something, just don't understand. All I read the plugs and CAI was to be great. Not impressed so far.

09 Brabus 27k

Don't believe everything you read on the Interweb...BUT are you enjoying the new noise your Smart makes now...?
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