225 has been slow since '93/'94 unless one was to race a Honda of the same year.Watch out for the KIA Optima turbo...I know a guy making decent power with a few bolt ons I installed for him.
Its crazy when his boost builds and it roasts 2nd and 3rd from a roll.
225hp isn't what it used to be.
Back to most hated mods ...Obnoxiously loud exhaust on a stock car...its gonna get your butt beat by a KIA or a Hyundai.
As far as worse mods go, "I'm not a big fan of "Fobras." Or on the newer cars I hate the "tune required cai's." It's just another scam so they can sell a handheld tuner/cai' combo for $800. At the end of the day they get an $800 timing advance.