how much does a tune-up cost n a 99 acura 3.2 tl

I would have looked at by a qualified tech to make sure that a tune up, which is just replacing some old ignition-fuel-filters components, would fix the problem. Tune parts may not be needed. A lot of times the seller will replace tune parts before selling to cover himself. May have clogged exhaust at the cat conv and tune parts will not fix that. Old tune parts can contribute to clogged exhaust though.