I received my 2018 WRX FA20 style car back from the dealer. When I got home I found the engine cover missing. The car itself runs fine, but there is no engine cover. Do I need the cover to ensure no water gets in the engine compartment? I have contacted the dealer. No word yet from them. Seems to me the turbo requires it. Can anyone confirm this? Without it will there be damage to electrical/wiring?