Mine is definitely the trend of doing “catless downpipes” and “resonator deletes” making your exhaust super raspy as a means of gaining more volume rather than doing a proper exhaust setup. Especially since high flow cats these days will flow more hp than most are making.
Pop and burble tunes that are completely unnatural. Real pops and bangs are awesome, as are genuine flames, because the engine and exhaust are actually doing things to make those happen naturally. Fake or “tuned” flames and pops to me are just kind of cheesy/obnoxious to me.