Went to do a simple creek (rocky) crossing which I had done a few months earlier in 306 which felt lower than a stivo however, the car stalled half way across. The water was about a cm off the sills (floor well sealed). climbed out mindow, checked engine, fan still going as you could hear it hitting water. next choice open air filter box and gently reverse out, once out close box and everything was good. There is not enough suck to get water into airbox if standard. CAI (good luck) probably wont goes as deep and same sucking power.