i made a stupid mistake of modding my s4 TB on my 10th AE, and now simply want a stock one. Are the S4 TB's all the same or are there differences between the N/A and Turbo TB's? Thanks

 

i think they are different.

 

what is different between them if they truely are different?

 

Internaly they are identical, externaly compleatly different.

 

same bore and flaps but the mounting should be different. I searched for some pics for you:

TII (says infini but i don't think they differ from the other TIIs)


EDIT: pics did not go through.

here are the links:
http://bdc.cyberosity.com/v/Throttle...C3S+1.jpg.html
http://bdc.cyberosity.com/v/Throttle...C3S+3.jpg.html

still searching for good NA TB pics for you to compare. Feel free to do so yourself also.