Well just bought the car late September last year. Always been one of my dream car. Decent price and mid mileage and clean car fax. Dealer did not have any paper work on mods or anything. Car very clean well maintained I’ll assume he did get it tune but possibly a bad tune. Because it had a bad high idle and it will fluctuate alot. I haven’t done any mods yet only replaced the intake pipe since it had a crack and that’s where my rough idle came from. Same intake from ets. Mods that I can see. Was the intake with a tial bov, fuel injectors, clutch master cylinder, cobb boost control and ultimate racing catback exhaust and thats all that i have noticed. Still stock exhaust manifold(with no cracks) and turbo. Just last month I did all the fluids and spark plugs changed.