Driving in the rain with that vent will only cool down the engine even more, no harm at all....Water gets into the engine compartment area ALL the time, even without a hood vent. Just protect the wiring connectors with dielectric grease, and maybe open the hood, after the rain, to make sure it dries out good, under there? Not critical...

 

I've had cars with hood scoops and vents and ducts never really had an issue.

 

looks pretty sweet

 

"Functional" for what?

Leave that out on the driveway in the rain & winter, drive it in the winter, no worries.

 

Having the coil packs, alternator, and wiring getting rained or snowed on for hours at a time on a cold motor sounds like a receipe for failure.

While minimal amounts of water may get into the engine when driving in rain and when crossing water offroad, it quickly evaporates due to the underhood temps of the running motor.

 

keep and eye out for moisture/water with the coil packs and in the spark plug wells. The I5s are known to have issues with corrosion there and having a direct path there now could not be a good thing. I've looked under the hood after driving in a heavy rain and haven't seen any water pooling on top of my motor like it would just sitting there in the rain and snow.

4u33, At least put removable inserts/cover in there so you can protect your investment when you don't need the extra cooling effect.

A guy did this a year ago. People told him he would have issues. He argued the same things, my motor gets wet when it rains. Blah, blah blah. Never to be seen nor heard from again.

 

If you look at "cars with hood scoops and vents" most are going directly to the intake and they all have weep holes for the collected moisture/water to drain out away from the motor while at rest. Plus, how many of those motors had plug wells on the top of the motor that are known to corrode when they collect water/moisture?

While the idea of venting the hot air from under the hood is commendable. More thought might have been needed to properly accomplish the task.
Venting the rear of the engine compartment or cowl might be a more solid solution. As the air passes through the radiator and over the motor then it is expelled.

 

I'd like to know how many guys ever had an overheating problem,I have never hit midway and today my mirror thermo read 98-102 for a couple hours of in town and medium speed driving. It read 101 at 45-55 mph!
I dont see any need to improve a good system,if it aint broke,----

 

I've had overheating issues when wheeling, but it was from a radiator that had dirt/mud clogged in it.

 

well done installation job! not sure if i agree that it will benefit performance though..... of course there are some things on the truck the engineers couldve done alot better on.....