A friend of mine finally got his GS300 back since he dropped it off to go FI. They still need to tune his map but we did a few runs on the hwy from 60-90mph. There is a HUGE turbo lag, I'd pull 2 +\- car lengths before he'd start to stay even. Thus our last run I waited till he started to pull on me before I went WOT and we basically satyed next to each other the whole time. I'm sure once he gets the map tunned it'll have more whp ... I'm guessing 300whp since his car is easily 500+ lbs more than mine. The Stage 2 for the GS300 is supposed to give him 350whp but obviously it's after the 1-2 sec delay. I'm sure it's a fast car once the turbo spools but in races where the time is <5 sec it really doesn't matter.
I had a good time and it's fun to see everyone have fun. I'm glad I have a "faster" spooling turbo as I'd have a cow if I had to wait 2+ sec since I'm a 0-60 kind of guy.