The car may not run perfect without the right tune but I would take care of the relatively easy stuff first before you go and spend the hundreds of dollars for a tune. Does the miss occur at all rpm's, at a certain rpm range or just every once in a while? A tune wouldn't hurt anything but it won't solve your problem if your car has an existing issue.
-brian
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97 T/A Ram Air Convt
Forever dyno queen / 777rwhp 662 rwtq @ 17lbs / 10.2 @ 140
'24 Corvette Z06
'17 Sierra 2500HD Dmax
'17 Lex LS460
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