2015 Trademan 4x4, 3.92, 6.4' bed air lift 1000 bags, bilstien shocks, 34" nitto g2s, Unknown tune.
my 15 came with a catch can when I bought it.. one hose has a bit of a kink I thought would be restrictive in it but its never effected operation. I drain blck oil from it from time to time and no codes. stupid question but are you sure the drain valve is closed and not open on the bottom of the can? mine has an unusual spring loaded locking valve.