I used to own a 2008 Itasca Meridian 37. A couple of times, when pulling into a gas station at a very slow speed and at an angle, the coach would rock back and forth so violently that some of the upper cabinets would empty onto the floor. I read about the motion control valves and their purpose. I thought I would give them a try. They worked!
I believe they are only designed to overcome this weird oscillation at slow speeds that Freightliner chassis had. They didn't change normal over the road handling.
When I got another Winnebago (43') with a tag axle Freightliner chassis, it didn't have motion control valves and didn't need it.
My 45' Bus doesn't need them either. If you're getting, what seems to be uncontrolled oscillation, I recommend them. If you don't have this sympton, I am not sure what they will do for you.
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Michael
2017 Allegro Bus 45OPP, Cummins ISL 450, Allison 3000
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