Hey, if anyone can kinda help me answer a few questions and point me in the right direction, id really appreciate it. I've finally bought a bagged 99 tahoe and in all so far, everything seems ok... When i seem to either raise or drop the truck, it always seems that the front passenger bag is deflating faster, and inflating up slower. Is there something that would adjust the speed of inflation and such? Also, its got a belt driven compressor under the hood. Seems to work great, but im not familiar with them. Anything to watch out for, or to regularly maitain with that type of compressor? Or with any bagged vehicle what is the typical regular maintnence? If you have any advice for someone new to this id really appreciate everything. Thanks  

There are a few systems out there that have air flow adjustments, but it's not that common. Some GM vehicles are substantially heavier on one side and that can cause the uneven raising and lowering, I don't think that it would be a flow valve.

As for maintenance on the compressor, it depends on the manufacturer. You'll probably have to do a bit of hunting around to find out what needs to be done to keep it alive. On my EDCs in the past, every couple months I would disconnect the line to the tank and run a couple tablespoons of mineral oit through it. It always seemed to help.