I have a sami on basically a tube chassis, I estimate the weight around 3,700. 60/14, th350, np205, and a v6 4.3.
I have roughly 5.5-6'' showing in the front on 14'' STX's and 7.5'' showing in the rear on 16'' STX's.
I can't remember exact pressures but around 140 psi lower and 110 psi in the rear. It took me awhile to get that high I started at 90psi in all four corners and slowly increased until the body roll was eliminated. At lower pressures even shifting from park to 1st with the th350 would squat and torque like it was on crappy air shocks. With the high pressures i have firm ride at 20-30mph and when shifting it doesn't flex. off-camber trails can feel a little uneasy but only in very extreme conditions.
needless to say over all I am very happy with them I have yet to roll or flip because of a push off or body roll.
I plan on using them on my new build LARGE MARGE only thing i'm going to do is add a rear sway bar, main reason I am choosing to do this be cause I believe I can lower the pressures all around getting a soft flex while helping eliminate body roll. I feel the lighter rigs such as mine have trouble finding that happy medium to get the lighter pressure without the body roll.
I also want to look into the plugging of the valves more, not so much for bottoming out but to see if it would make any improvements but at this point I don't feel messing with them and possibly screwing them up is worth the gain if there is any.
Last i've only had two issues with the ORI's. l I have had was fluctuating pressures with the changing of the seasons, for example spring and winter get very cold then summer comes and temps rise to 100 degrees the pressures would expand and end up with a few extra inches of ride height. Second issue is one of my struts had the fluid/oil foam up. When that happened I was unable to discharge the pressure without the oil coming out of the schredder valves. I ended up taking the entire strut apart, empties all the oil and refilled to factory volume.