if you suspect a maf sensor problem, remove the electric plug. this puts the ecm into default mode and the engine will run better.
my moho was getting water in the intake ''tuba'' through a gap in the top of the front engine access panel. the paper filter was wet and plugged up. i installed weather stripping in this gap. problems with the windshield wiper motor often are caused by this gap.
i installed a k&n gauze panel air filter #33-2062-1 in the stock airbox. it won't plug up when wet like paper filters will. i will use the s&b gauze filter #66-2014d if i ever have to replace it. it is thicker than the k&n filter for better filtration.
it is necessary but difficult to get the airbox to seal properly. the latches are difficult to operate.
01 WINNEBAGO 35U W20.8.1L SW Wa, Hi. Good Sam, SKP. AMSOIL fluids. BANKS ecm program. SCAN GAUGE II w/ Ally temp. 2 LIFELINE GPL-6CT AGM Batts on their sides. TST tptts. K&N panel air filter. AERO mufflers. TAYLOR plug wires. ULTRA POWER track bar. KONI fsd shocks, toad '14 smart car