So tonight I was able to use chauffeur duty as a reason to give the GTS a shake down. I'm impressed with what a muffler that flows can do for performance.
I've gained 3 in mg of vacuum at idle. Boost comes on quicker and hits 11 pounds with only about 1/3 throttle.
Add to that a bit more 8 valve burble and hell, what a great way to spend $60.
Now if I could just get the sun roof to stay closed over 50 mph.