Blocking hood vent above open (Steeda) CAI...

[908ssp]

The have been numerous posts about the hood lifting at speed with both vents working. The hood lifting is a clear indicator of how much loss in weight is being applied to the front tires. Whether this is noticeable as lighter steering feel I don't know. For every additional cubic foot of air you vent from under the hood you get an additional cubic foot of air though the radiator. Anybody with any SCer should think about adding additional hood venting. As for the so called CAI they aren't. None of the after market units seal enough to keep under hood air from entering and none of them are more effective in delivering cold air to the intake as the factory or completely closed systems some companies are now offering. Putting a piece of sheet aluminum on the hood or attached to the air box to divert water is your best bet to keep the filter dry. But being wet really won't hurt anything but may result in slightly lower peak performance but hey the roads are wet you should be careful or you'll end up in a ditch.

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[dbranger94]

I purchased a pre-filter from JLT. It's made by Outerwears. It's "water repellant" (hydrophobic) and does not increase intake restriction. It also keeps crap out of the pleats in the filter. I figure it should help keep most of the water out of the intake. Outerwears has them for just about everything.

 

[COYOTEV8]

My neighbor was worried about this and attached a flat piece of metal so that any water coming in would drain right in front of the CAI.

Actually that is another good solution, instead of blocking the vent, I can fix something above the filter (like a top for the CAI box)

 

[COYOTEV8]

Ask the engineers....I'm sure they love adding adding things just for the hell of it.

or for the look ;-)

 

[Poppacapp]

My stock airbox does a wonderful job of keeping water out, and keeps the IATs lower too.

 

[2015 Silver GT]

My stock airbox does a wonderful job of keeping water out, and keeps the IATs lower too.

Same here. Much better choice than the Steeda hot air intake.

 

[COYOTEV8]

Same here. Much better choice than the Steeda hot air intake.

Personally I don't care about performance (I don;t expect any gain from a CAI w/o tune), I purely bought this one for the sound....

 

[rainier446]

Block the water, you'll be fine. Thousands of s197 owners did it without issue, and if it prevents you from having to mess with your filter all the time even better. You'll notice zero difference.

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[GDP]

Well I am certain steeda when doing the design and engineering looked at that and determined it wouldn't harm anything. OR they didn't and royally messed up and overlooked it. What it comes down to is how much do you trust steeda not to blow up your car.

On the reverse ford designed and engineered every little thing on this car and things are put into place for a specific reason. So the question here is are you smarter than a ford engineer even on a bad day? Or smarter than steeda engineers if you're going to modify their design?

Do you have access to a wind tunnel and smoke tool to test the air flow changes? Do you have CAD to see how it will fit properly and modify it if not?

I know I'm not smarter and so I'm left with trusting aftermarket companies to do these things for me and use what they make as instructed. I've seen amazing things from home made mods, but for every one of those I see 100 bad ones.

 

[COYOTEV8]

Well I am certain steeda when doing the design and engineering looked at that and determined it wouldn't harm anything. OR they didn't and royally messed up and overlooked it. What it comes down to is how much do you trust steeda not to blow up your car.

On the reverse ford designed and engineered every little thing on this car and things are put into place for a specific reason. So the question here is are you smarter than a ford engineer even on a bad day? Or smarter than steeda engineers if you're going to modify their design?

Do you have access to a wind tunnel and smoke tool to test the air flow changes? Do you have CAD to see how it will fit properly and modify it if not?

I know I'm not smarter and so I'm left with trusting aftermarket companies to do these things for me and use what they make as instructed. I've seen amazing things from home made mods, but for every one of those I see 100 bad ones.

I think you missed the point, the question wasn't if I should put on the CAI or not. (No intention to open a religious fight ). The question was about any harmful effect of blocking one of the hood vent during normal daily driving.

 

[COYOTEV8]

My stock airbox does a wonderful job of keeping water out, and keeps the IATs lower too.

Again, the question wasn't about the CAI. It was about any harmful effect of blocking one of the hood vent.

 

[rainier446]

Again, the question wasn't about the CAI. It was about any harmful effect of blocking one of the hood vent.

None that you'll notice for sure. Yea they put the extractors there for a reason, they've had them on all 5.0 mustangs from '12 on (I think, not 100%) but everyone I know who had an s197 and a steeda CAI put something on their extractors to block water from pouring directly on top of the filter. In rain storms and such it works just fine but a lot of us spend copious amounts of time washing our cars and during that period you're likely shooting water directly at that vent for even just short periods. I know I would block mine if I had an open filter, and you said you're not driving it that hard and not racing so yea. Block that ho!

 

[COYOTEV8]

Thanks, likely I will do that. The CAI just arrived :-)

 

[RUN RICH]

If you like you could always buy some T316ss woven 200mesh .0021" and cover the opening. It'll still let a small amount of air in/out but will block any misting or drops of water larger than 74 microns.

You'll have to wash it with a small soft tooth brush when you wash the car to keep it breathable.

Just a thought...

 

[GDP]

I think you missed the point, the question wasn't if I should put on the CAI or not. (No intention to open a religious fight ). The question was about any harmful effect of blocking one of the hood vent during normal daily driving.

Again, the question wasn't about the CAI. It was about any harmful effect of blocking one of the hood vent.

Just because you don't like the answer doesn't mean we missed the point. You're not an engineer. Don't mess with stuff you didn't design unless you know the full consequences.

Just because others in the past have blocked theirs 'without issue' doesn't mean something negative won't happen.

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