I like the idea of the CTIS, but I started with some issues.
When I got my truck, if I turned on the CTIS the tires would all drop to about 25 PSI and stay there, even when running on HWY mode.
At that point, it was time to talk to someone who built the system.
After sending an email, and talking with someone that wasn't very helpful at CM Automotive, the OWNER of CM Automotive called me about 1 week later and he is extremely good with these systems (as he should be) and VERY helpful.
I explained the symptoms to him, and he told me to send him my manifold, the ECU, and one of the wheel valves.
He said he would troubleshoot and repair them if I paid for shipping, which I was delighted to do!!!
I recently got the parts back from him, and he called me to explain what they checked, and what they rebuilt; the ECU was perfect, they rebuilt the manifold, and rebuilt my wheel valve.
He also suggested that I go through the whole system before putting the parts back on; clean, inspect, and replace if needed all the airlines, fittings, hub seals, etc.
He said after I go through it all, and put the rebuilt parts back on, go ahead and run the system, and if theres any issues at all he will continue to help me until my CTIS is running properly.
In general, I think it's a good system that does not work properly for most of us, due to lack of maintenance from the military, and these trucks sitting for who knows how long without use.
I plan on making mine fully operational and reliable with his help, and will let you all know how it turns out when I'm done. (I have not had a chance to go through everything yet, but I will soon enough).
MANY THANKS to the owner of CM Automotive, it's great to know someone cares about the product they sell, even if it's 16 years later