I raced a Mercedes-Benz C320 from a roll of about 20mph on a freeway on ramp. I pulled about a half car length on him by the end of 1st, but didn't shift as nicely as I would have liked into 2nd, so we were neck and neck until about 80mph, then it was a merge and he was on the right so he braked and came in behind me (though there was the shoulder if he wanted to keep going).

The C320 was stock, so it has 215hp at 5700rpm.

My FC has the stock S5 engine, stock turbo, ported wastegate, running stock boost, C's short shifter (not really advantageous right now because I need to yank it into gear), GReddy/Trust Power Evolution II full competition exhaust w/ silencer (think this might've drained away any power that I would have gained from the exhaust), and GReddy Airinx intake.

Not much of a kill... pretty much neck and neck the whole time. It was safe and fun though.