Back in 2004, I was out trail driving with a buddy who had a really nice, still under warranty, lifted Ranger Edge. I went through a HUGE mud puddle in my bone stock 2003 Ranger XLT without any issues. He charged through it in his lifted 2003 Ranger Edge, and didn't make it through. I'm sitting there thinking, WTF - How is he stuck. He sucked water up into his aftermarket intake and hydro-locked it. After getting it towed out of the woods, the shop that towed it offered to pull the heads and ***** the damage. It was a MESS! The number 5 cylinder looked like a grenade went off in it. The piston had a big hole, and the resulting junk gouged up the cylinder walls.
Damnedest thing though? The shop was able to clean up the motor and the rest of the truck, and towed it to a local Ford dealer where their service center replaced the motor under warranty. I think my buddy was out of pocket $400 to the shop for the motor clean up (and clean out!) and I had to loan him my stock intake.