Which watch for find a original SMS turbo and ECU?

[Audi-Porsche Avant RS2]

Hello friends, I have a question, all SMS turbo for S2, S4, S6 must have SMS write on front of cold side? Which I must watch for check if a turbo from S2, S4, S6 is a SMS original one or not? And for ecu or chip made from SMS what I must watch? Which kind of upgrade had S2, S4 and S6 tuned by SMS? Only turbo and chip? I mean engine upgrade, not others upgrade.
Thanks!
Bye

Alessio

[Audi-Porsche Avant RS2]

Nothing?
Is possible to know something about SMS upgrade on S2 Coupe ABY?
Thanks!
Bye

Alessio

[rs200]

I have sms turbo and ECU in my car... the turbo is K26 14-70 and it's the same turbo like MTM have on his s2 with 304hp program..

it is NOT K26 like have 10v engines, there are a little diference .

there is no modification on engine, engine is stock..

[prj]

Stock engine, only turbo is different.
Shows SMS tuning in vag com...