So I got a 2015 fiesta st with 17,000 miles but it also came with mountune parts. Is there a way that I can contact the previous owner and ask him what mods he put in it? Or so I get like a Haynes repair manual and compare the stock parts to mine? Or go to a dealer and look at a stock FiST? It has some mountune exhaust, hoses, and air intake. Maybe a red stabilizer bar or something under the engine