cobb catback

How does the ST run with the catback and downpipe installed without a tune? Also, my dealership said it is going to take a month to get the replacement motor mounts to fix the 1-2 bang. Should I wait to install the exhaust until the mounts get replaced to avoid warranty issues? (I'm worried...

So today was a bit of good and bad, and a bit more of a learning experience for this car. I began the day with high hopes of making bajillions of horsepowers with the Stage3 configuration. I setup the car with our Stage2 map to get a baseline with the newly added downpipe. Within the first...