We have had our 2012/Cylone 3950 out many times, my wife since day #1 says she smells exhaust. It never set off the co monitor until last trip. After checking all of the seals I came to the conclusion that their is no way to totally seal up any rv that has slide outs.
Well, I just installed a Genturi system with an 18" extension (to clear the roof line).
I had to make a new exhaust pipe (longer) so that I could open the cargo door when the Genturi is installed.
I had to make supports for the Genturi stack, They do not offer any extra supports. I camp where it could get windy and didn't want it blow away. So I manufactured supports using suction cups and plumbing supports. I did not want to drill into the siding.
We have not been camping since I have installed it, but I am confident it will be the fix for the exhaust smell.
This is a major health risk (death) that needs to be taken seriously. If you think you smell exhaust - you do.
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