I use a.i.r on my impulse, But you will need a Inlineregulator to reduce the pressure to say 150-170psi. The a.i.r wont manage to flow enough at such low pressures. I use a centerflag inline reg which is fed with 650psi´s from the a.i.r.
Hope this was an answer on your question...
Regards
Mikko Team Hypnotize sweden