In what terms are you refering to?
Eating away the rubber seals?
Braking down the carbon?

Boost temp?

We are talking about an n/a engine here.
I dont think it will eat away on rubber seals.

I personally think it helps with the carbon break down to loosen up seals/springs so they can work properly..

Take away all the carbon,No I dont think that..

I have soaked old seals/springs in ATF.. and gasoline.
The ones in ATF,do break down the carbon build up easier than the ones in gas.

I dont get where you are getting at,cause out of the thousands of people who refer to the "ATF" trick claims it works,your the first so say it does not.If thats where you are getting at.