so im looking at this integra and considering making a deal, but i need a little info first. the owner tells me the car will stall or sputter sometimes, so he took it to his mechanic, and the mechanic said he thinks it needs a tune/its running too rich. its basically a stock B18C1 with exhaust, intake, ITR pistons and cams. would i need to re-tune with such mild mods? or is there maybe more to it than that?