How do i fix it???? Just got my car back for the tranny swap and new clutch only took a month in 2 days i drove around 359 miles it was fine then the check engine light came on ...

 

Could be.......
MAF
O2 Sensors
Vacuum leak
Clogged fuel filter

To test the maf just unplug while running & if it gets better it is either bad or just dirty & you can clean it.
If you dont know when the fuel filter was changed last it probably needs changing.
To test for vacuum leaks or boost leaks a tool you can buy or just make yourself.
(what you need to make it)... a 3" fitting clean out adapter (see lowes or home dump) a shrader valve or air nipple.. a drill to make the hole in the clean out cap....and an air source to fill your system. (do a search for better more in depth directions)
Do you have a VAG & a laptop?

This should get you started & hopefully it helps you,
Eric