Question about putting air on coilovers

I was wondering if a special perch needs to be made or will it sit fine on the perch the coilover comes with.   Do you fully inflate the bag and then adjust the shock travel length so there is no play with the bag?   Thanks

subscribed, i need to know this as well

well
since im one of the people that cared abotu how i put it on, and all htat jazz, there are two options
 
If you just want it on there, inflate the bag, snug the perches, deflate the bag, move perches abotu an inch up.
that will give you a basic setup.
 
if you CARE about performance, you have to play, and play, and play, and play
i am still fine tuning my setup, i FINALLY got the front at a good preload to act hwo i want it to, now i am workign on the rear. this is like 4 months later, adjusting stuff every week or so

You'll most likely have to cut a notch in the perch for the airline.  Other than that it's quite straight forward.  Like Grant said, you'll have to play with the setting to get it how you want as far as rebound compression, etc.  The damping is one thing you'll have to play which is easy.  Pre-load is a whole other story.