LOL well been a while since i came to hang out around here and BAM some stuff i actually
spent and spend a good amount of time with. STILL all just what i have done, experimented
with and still LEARNING daily. could all use more playing with
OH AND this is a old post
and at what $$$ level you are wanting to spend on this will allow you to do different things
(please note i did not say more $$$ you will have something better)
just a VERY VERY simplified run down
bags as overload/in coils NOT really a good way to use to increase height as you greater limit
travel to next to NIL. use as they are intended

heavier loads.
adjustable height with coils/coilovers, two ways really, CAGED bags OR moving mounting
points. basically do the same thing just mounted differently. can use isolation bags ( small
moment, very HIGH load & HD, and cheap)
can also add it leaf springs above as well, but require a bit more complex brackets to achieve
the same goal.
i have seen some work done with a single middle mount on various rigs, none first hand though.
might have some use.
complete suspension setups
puter controlled : TONS OF ECUs more and more every 6 months. issues with most
is sensors, resistance to abuse/use, and SPEED !!!!!!!!!! most OEMs are slow to process controls
for the bags, ie adjust every min or longer. some are 4 wheel sensors, 2 sensors, or front 2 and 1 rear
sensors, aftermarket stuff continues to BOOM, with lower dollar complete setups, more advancement, etc.... ALMOST all aftermarket stuff is BASED or use OEM parts off different vehicles. ( intersting note

)
independent control, can do all 4, front 2 only, rear 2 only, control or leave the opposite end at a SET PSI. requires too much input really doing all 4. SPEED of the control is the issue specficially in the VID that dusa posted, which can be simply put on a flow valve. need supple suspension, and supple movements, drastic changes can get you where you dont want to be. something to said about being able
to know how it feels/works.
SET PSI, can do all 4, front 2 only, rear 2 only. can chain front two or chain back two, and run opposite
set independent or all independent. front set indy, and rear chain is probably the most stable with great flex and easiest next to all 4 set indy.
BAGS are not ment to be moved/used on internal bumpstops, ONLY AT REST !!!!!!!!!! and are not made to
act as a bump for your rig when jumping it, etc.... at least every bag and manufacture i talked with. a major issue when your ruining bags at $200+ a pop
BAGS have NO structure, will NOT keep themselves aligned. straight up straight down. high movement bags are out there, but they are THIN, lower ratings, and do wear faster when comparing. more side to side faster the wear. MIN air pressure i do reccomend to prevent bag fold, specifically when internal bumpstops are used at rest. THIS is why CAGED/structurally controlled movement is required when adding this onto another suspesion setup.
not a fan of OEM bags, ( though i have not done RR stuff ) PLASTIC= YACK, thin bag, most taper, small usable travel without significant wear issues.
enough for now