So I was approaching a green light that was turning yellow and was trying to show off a little and floored it. I was probably going in 3rd or 4th, but it must have shifted to 2nd. The exhaust SCREAMED. I've never heard my car sound like this in the time I've had the new mufflers. It sounded like a Lamborghini. My immediate reaction was that I might have broken the transmission, but after a few tests it seemed to be driving ok. Car did seem weird though on the drive home like it was out of power... Think I screwed up the ECU map and now it's in like race mode. Anyways it was crazy. That would have sucked if I messed up my car trying to make a yellow light. Reminder to baby it a little more sometimes, there's no rush.