Join Date: Oct 2012
Location: Batten Roodje
Thanked 381 Times in 340 Posts
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i've seen several YT vids of folks having trouble with their factory rear air when leveling the truck. it works off a "level switch" so since you've brought the front up, the rear now thinks it's low and it's trying desperately to compensate. probably has the airbags pumped up so high you might as well be on suspension blocks. there are kits out there to put a longer sensor rod on the air system to account for a lift or level; i think Greg_A has a vid on doing that with his 18 crew dually when he put the full thuren system on it (not a bad way to get comp'd ~$10,000) with fox 2.5 remotes and F/R springs.
might be worth looking into before eating the massive depreciation already on what's otherwise a GORGEOUS truck.
FWIW, 50 might still be too high pressure. i'm running 50 in my fronts unloaded (granted, i'm in a dually) and 40 in my rears. i'm lowered (a lot - easier to get under trailers) and it still rides like garbage but it's light years better and way more controlled than at stock pressures / ride height.
hope this helps. good luck!
08 Resistol. Anarchy EFI, 5" TBE, grid delete, fleabay elbow, Sinister coolant filter, Carbonite DP sensor, CSS -4" springs, reverse level, CalTracs, Amsoil bypass filter, Revmax VB/TCM, Mishimoto stock replacement radiator.