no you dont need to change anything, well i guess the diverter valve but its like $30 at the most

 

You also will probly want to get a boost gauge to monitor your PSI, just helps to know that your chip is doing what it is supposed to be doing..

 

The problem is that i cant seem to get the ECU with my kind of serial #... However i did find one from this webiste
http://www.drivewire.com/audiparts/c...ntrolunit.html
am not so sure about it though, i have checked all the junkyards in Seattle but cant seem to get a person with one.

 

and while your in there hooking up the boost gauge throw in a new turbo

 

and a fmic and mise will go 3' full exhaust

 

and a snub to really make that bitch tight.. and a fpr/manual boost conrtoler...