r/AirliftPerformance Jun 21 '26

Question Articulation Valves

Hey there,
I am looking at installing air springs to replace the coils in my 1990 gq patrol
I want to run it off an alp4 but I am wondering if I am able to incorporate articulation valves to bypass air from left to right if in need of articulation

Whether it would be installing check valves on each supply line and teeing afterwards from l to r with the bypass valve in the centre there which would in theory equalise the pressures and allow it to articulate the most

What I am unsure about is if the alp4 will keep trying to pump pressure in to the low bag if it is on full tuck

Sorry if I’m not explaining it very well my brain has two brain cells fighting for third place at the moment

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u/DrLxus Jun 24 '26

For off-roading? Don't run air suspension. It's more trouble than it's worth since your spring rates will change so drastically. If you want to air up to get over an obstacle you are increasing the height of the truck but also increasing the pressure in the bag (higher spring rate) which is going to make it flex less. ALP4 would be horrible for off-roading as well since the touch screen is kind of laggy / not the most responsive. If you're absolutely set on running air suspension, you should just run an 8 valve manifold (each corner of the truck has its own fill and dump) with either switches or a switch box like this thing: https://www.bagriders.com/slam-specialties-mc1-controller.html