we bought both cars with mods. tuned pcm, pulley, intakes, but both had stock exhaust. we replaced exhaust on car #1 and it ran the same, before and after. sure sounded different though. car was FAST. easily beat my caddy. than we sold it. got car #2. same mods, same stock exhaust. so we replace that exhaust and no difference in performance either. that car was 7/8 as quick as car #1. i could feel it being slightly slower. sold that too. we actually sold both cars for what we had paid plus parts so we never lost money. kid likes to screw around with modding cars and than sell them. we put all new sound systems in both cars. subs, amps, HU, that stuff. buyer #1 liked system so we threw it in. buyer #2 did not care for it so we yanked it out.
