How similar are the Carter AVS and TQ?

Bill,

Are their principles of operation generally the same?

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Yes, heres a couple of random T-Q pictures I have. (Courtesy of DemonSizzle I beileve) I need to re-do my entire picture system. I'm a mess.

The AVS looks like a AFB except the second choke looking plate over the secondaries.
NO, on the EGR.