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Message: <blockquote data-quote="carbonfiberunderpants" data-source="post: 972994" data-attributes="member: 6506"><p>More or less pressure in the bumpstops won't "upset" anything, nor will it have any bearing on when the bumpstop pads contact the axle.  The pressure in the bumpstop is an adjustment; the perfect pressure for your truck will vary depending on things like the normal load you carry in your bed, the speeds you plan to travel over rough terrain, or how rough the terrain is you want to travel on.  It can also be affected by aftermarket bypass shocks, shock valving, or more/less progressive springs.  Excess pressure in the bumpstop will limit your up travel, make the impact between the axle and bumpstop excessively harsh, and generally suck.  If the pressure is too low it will cause the bumpstop to bottom out on itself and potentially damage itself or the mounts.  Unlike simple air helper springs the air bump has internal valving so excess pressure won't cause the rear end of the truck to hop or jump or anything like that.</p></blockquote><p></p>