FC series 4 and series 5 Seondary ports?

[Kaptainbalistik]

Inane question as usual.....

My Series 4 has the exhaust activated Secondaries, The Series 5\'s are activated by the Airpump, Correct?

So are the actuators different? ( Im thinking that would make them a bit more predictable, and still function with a low restriction exhaust.

Yes, I can just jam them open, But thats the easy way out, Im keeping the airpump as the Rego Guys like that sort of thing!  Also i would like them to work as i will get better thoretical low end midrange POWAAAAA :Snoring

Also, where does the S5 take the pressure feed from?