1" to a 3" throttle body?.... The TSI AWD and GSX should be identical. Only difference is appearance and name. I don't think I have ever seen a 1" throttle body before... Anywho, welcome to the DSM world. My first suggestion to you would be to read read read. There is a lot to learn about turbocharged setups on these cars. It's awesome that you have ambitions to rip right into things on the car but it would really benefit you to learn as much as you can about these motors and cars before tearing into things. I've seen too many people get into these cars and rip things apart only to never finish them due to complications and problems. You should be able to find a fair amount of good information here in the Tech Articles section. We gathered together a lot of it when we were all really active and into it. Tuning is a big thing to jump right into without much knowledge about it. I might suggest starting with the basics on these things first and then get into some more worth while upgrades.
