I tow my shifter kart on a small trailer all the time, and tow a 15' boat every once in a while with a steel trailer. We also tow with an Integra GSR. Both cars tow fine. All factory turbocharged cars come with a no-tow warning. The car runs at higher boost due to the increased load, but its no different than if you went racing. Driveline failures are due to engine torque output, and launching on the dragstrip is much worse than towing a small trailer.
You probably need to keep the tongue weight under 250, which means towing less than 2500 lbs, but you wouldn't want to pull that much anyways.