that setup is almost a total waste of time... there is no real way to prevent the hot air from the engine from seeping into that box i believe the intake should outside the bay for the best results

 

Yeah that box in the engine bay would help alittle for a minute untill it heat soaks. You think one little peice of aluminum would keep the heat out? You can feel the engine heat throught the firewall which is slightly thicker

The stock setup draws in cool air from infront of the radiator. It works better than you probably think, and it wont be a real choke point unless you have a standalone and are running no AFM. Go look at your AFM. It's a little opening that will never outflow the rest of the intake.

 

If you really worry about water all that much, than you can build an "aqua shield" .

Do just like the "heat shield" for inside engine bay setups, but have it wrap around the filter as to protect it from splashes of water.

Me myself, I prefer bumper-routed setups..more protected from the elements, and look at the big holes in the bumper to feed air into it!

 

quick question, what size is that breather that u used??

 

by breather i assume you mean the filter, and what part of it are you talking about? the o.d. i.d. of the flange? the diameter of the filter itself, its height?

 

You get exactly what you deserve. If you mount your intake low (i.e. out of the engine bay) and then drive though a deep puddle you're a stupid idiot. I find it hard to believe anyone with half a brain could accidently damage their engine this way. Common sense says if you have a low filter you take extra care to protect your engine, like not driving through deep water!

If you build it right hot air will not get in. You have to make an effective seal all around the sides and against the hood. It requires a bit of workmanship but it's not rocket science. Even if there's a bit of leakage the idea is to make it much easier for air to be sucked in from outside than around the edges of the heat shield. That means having a free-flowing path for outside air to get in.

Yes actually it does. Even though the heat shield does absorb engine bay heat, the amount of that's transfered to the intake air is very small because the air is only near it for a short time. Sounds like you've never actually done it or you'd know it does work. Also there's no reason why the heat shield can't be insulated to prevent any heat transfer.

The stock airbox and snorkel have been long proven to be very restrictive. Even an exposed filter in the engine bay will give small gains, and anyone who's moved their filter out of the engine bay or build a proper heat shield and intake duct as well will tell you their are definite gains despite the AFM being in place. Again, sounds like you haven't actually done it...

 

I meant the inlet

Is it like 9mm or 12mm??or sumthing liek that?