FI (Frequency Intelligent) exhaust diameter?

[Drogo_RZ34]

I have the FI installed on my Z. Absolutely clean tone and if you ask me it’s a little bit GTRish which is awesome.
Current set up: (not tuned yet)
FI LDP
FI catback
Nismo intakes + heat exchanger

 

[saltyz]

I have the FI installed on my Z. Absolutely clean tone and if you ask me it’s a little bit GTRish which is awesome.
Current set up: (not tuned yet)
FI LDP
FI catback
Nismo intakes + heat exchanger

Have any clips with the valves closed?

 

[FSUZ33]

Yesterday I said exhaust wasn’t on my list. Rethinking that now.

Are the valves electronic or did you have to find a vacuum line? How was the install?