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Old 08-06-2012, 09:16 PM   #1
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Cold air intake...

Well I see what everyone posts about cold air systems. I wanted to see for myself. Sunday I removed the stock air box and took a test drive with no filter. First I noticed it sounded really good. Second the darn Jeep runs so much better. It was a seat in the pants affirmation. I plan to change to a less restrictive air box. I bet the MPG's will get better also. It revved up quicker and definitely had more power....

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Old 08-06-2012, 09:17 PM   #2
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Old 08-06-2012, 09:27 PM   #3
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Maybe the OEM filter was completely clogged and no air was getting in until he removed it. I guess my stocks in CAI is going to pay dividends again. LOL.
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Old 08-06-2012, 10:25 PM   #4
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Less restriction = more crap in your engine. A lot of threads on here about this very topic,I would stay with the stock set up.
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Old 08-06-2012, 10:34 PM   #5
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You drove around without a filter?
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Old 08-06-2012, 10:46 PM   #6
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so, I have a question. if you're concerned about the engine getting cold air, how exactly are you measuring the air temperature the engine is seeing?

after all, if you're wanting to reduce the intake air temperature you need a method to measure temperature in real time over varied driving conditions....getting baseline measurements, and test measurements.
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Old 08-06-2012, 10:58 PM   #7
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The butt dyno measures temperature by using Dr. Browns flux capacitance calculation.
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Old 08-07-2012, 02:49 AM   #8
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Im not going to get into the cold vs stock debate. To each his own... I have a Banks intake. I like it. What I am going to ask would make sense and I have seen no one speak of it. With a cold air intake I know you need cold air so besides a snorkle are there any hoods that allow this. I have seen the louvered hood insert and really like it for underhood temps but what about a mini scoop or something?
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Old 08-07-2012, 03:27 AM   #9
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Quote:
Originally Posted by rubiconvict05
Im not going to get into the cold vs stock debate. To each his own... I have a Banks intake. I like it. What I am going to ask would make sense and I have seen no one speak of it. With a cold air intake I know you need cold air so besides a snorkle are there any hoods that allow this. I have seen the louvered hood insert and really like it for underhood temps but what about a mini scoop or something?
The only almost effective CAI is through the cowl. Search cowl induction.
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Old 08-07-2012, 03:34 AM   #10
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My banks comes up front on the passenger side. Not saying Im going to but if I were to cut an opening in the hood right above the filter then fab some sealing thinga ma do dab it woulod function as a "real" cold air intake. Of course theres tons of isues that crop up by doing that but it's fun to imagine.
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Old 08-07-2012, 03:48 AM   #11
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Quote:
Originally Posted by rubiconvict05
My banks comes up front on the passenger side. Not saying Im going to but if I were to cut an opening in the hood right above the filter then fab some sealing thinga ma do dab it woulod function as a "real" cold air intake. Of course theres tons of isues that crop up by doing that but it's fun to imagine.
Well shoot if your gunna do that here's how i would do it. I would use and accordion fitting on top of the bottom half of the stock intake box to a sealing duct directlyabove the box using a small short hood scoop in the front pass. Corner of the hood. That'd be kinda cool, and in that accordion fitting would be a prefilter that way you'd have plenty of clean and cool air.
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Old 08-07-2012, 04:12 AM   #12
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Yeah now you really got me planning it might just work because the accordion fitting would work to seal with minimal pressure but still enough to seal it against the hood. I suppose two small scoops wouldnt look that bad. Huh the wheels are turning now. Maybe its something that would do well in our community.
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Old 08-07-2012, 04:29 AM   #13
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Quote:
Originally Posted by rubiconvict05
Yeah now you really got me planning it might just work because the accordion fitting would work to seal with minimal pressure but still enough to seal it against the hood. I suppose two small scoops wouldnt look that bad. Huh the wheels are turning now. Maybe its something that would do well in our community.
Yep, you never know
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Old 08-07-2012, 05:37 AM   #14
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You're not going to pull any cold air by cutting a hole and mounting a scoop on your hood. You're wasting your time and ruining your hood.
Check out cold air induction on some modern muscle cars. They pull the air from the front of the vehicle(over the grill). The setup is most efficient at high speeds.
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Old 08-07-2012, 06:05 AM   #15
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Jeep??? High speeds????

I get what you're saying and maybe I would ruin a hood but then again I may stumble upon that great lost power mod for the 4.0 LOL. Really though it would be therotically sound. Yeah it wouldnt exactly be ram air or cold air but it has to be lower than the engine bay air.
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Old 08-07-2012, 08:45 AM   #16
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Before you cut your hood, have you seen the Spectre? Once again, I'm not sure how any changes really improve over stock... But at least this would raise the height of the intake. I'd rather it had a disposable paper filter, I'm trying to get away from the oiled filter idea. I like creek crossings, which are unavoidable around here, and I've thought of making something similar to this for a low profile snorkel.
http://www.quadratec.com/products/17006_7000_07.htm
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Old 08-07-2012, 08:50 AM   #17
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Quote:
Originally Posted by rubiconvict05
Jeep??? High speeds????

I get what you're saying and maybe I would ruin a hood but then again I may stumble upon that great lost power mod for the 4.0 LOL. Really though it would be therotically sound. Yeah it wouldnt exactly be ram air or cold air but it has to be lower than the engine bay air.
What he said.

To the other guy who just told me to search. I've already stated it'd be cool as a "joke". I've previously made it apparent I know my stuff on this topic by my introduction of the cowl induction to this conversation so please do me a favor and don't refer me to searching things for my jeep. Maybe you should search a cowl induction and apply the similar concept to my above idea. It's the same thing just a different location. Ram air is Cai and that's effective anytime you Have any sort of Rims pressure against you which is pretty much 35mph+. A scoop on the cowl and a scoop on the hood don't change a damn thing. I'm done here.

Your statement of modern Cai's is also inaccurate. Cold air can be obtained from virtually anywhere. For instance my dodge challenger uses a stack performance bullet intake which routes to the drivers side corner and straight down with a filter in the brake duct that pulls air from the factory aerodynamics.

The location isn't what matters.
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Old 08-07-2012, 08:56 AM   #18
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I use an Amsoil filter in the KJ, works pretty good. No oil etc.
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Old 08-07-2012, 09:14 AM   #19
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Quote:
Originally Posted by Derp

What he said.

To the other guy who just told me to search. I've already stated it'd be cool as a "joke". I've previously made it apparent I know my stuff on this topic by my introduction of the cowl induction to this conversation so please do me a favor and don't refer me to searching things for my jeep. Maybe you should search a cowl induction and apply the similar concept to my above idea. It's the same thing just a different location. Ram air is Cai and that's effective anytime you Have any sort of Rims pressure against you which is pretty much 35mph+. A scoop on the cowl and a scoop on the hood don't change a damn thing. I'm done here.

Your statement of modern Cai's is also inaccurate. Cold air can be obtained from virtually anywhere. For instance my dodge challenger uses a stack performance bullet intake which routes to the drivers side corner and straight down with a filter in the brake duct that pulls air from the factory aerodynamics.

The location isn't what matters.
I'm not sure who you're blowing up at... I didn't mention searching, I posted a link. The reason I like the Spectre coming from the cowl instead of the hood is for creek crossings when you drop the front end in, it's always a butt-pucker moment I could do without. I figure with one of those scoops facing the windshield it would help deflect splashed water away from the intake (which also has the cowl drain). I'm more concerned with the height and orientation of the intake for water reasons, not so concerned with the cooler air aspect. I'd think they'd both be better than stock.
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Old 08-07-2012, 09:32 AM   #20
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Quote:
Originally Posted by HarryJeepGuy

I'm not sure who you're blowing up at... I didn't mention searching, I posted a link. The reason I like the Spectre coming from the cowl instead of the hood is for creek crossings when you drop the front end in, it's always a butt-pucker moment I could do without. I figure with one of those scoops facing the windshield it would help deflect splashed water away from the intake (which also has the cowl drain). I'm more concerned with the height and orientation of the intake for water reasons, not so concerned with the cooler air aspect. I'd think they'd both be better than stock.
It was directed towards rayko and rubicon

Their never was anything they mentioned about searching oops :o my point still stands however
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Old 08-07-2012, 03:44 PM   #21
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sorry, but there are no gains you will feel with your butt. I did the same thing on my dyno. I will say that I'd buy the spectre intake (or diy fab one if I had more time) again in a second.
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Old 08-07-2012, 07:34 PM   #22
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Get a remote thermometer Wal- Mart $10. The kind with the wire.

Measure the air temp WHILE DRIVING where you are now getting the air, compare with the outside air temp. At idle the underhood air will be warmer, but if the fan is working right, there will be very little difference. You don't need extra power to idle.

Getting rid of the very restrictive stock box/silencer is what made the difference so far.

But if you need to shave off 1 or 2 hundredths of a second, it's worth getting the 3 degrees cooler air.
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Old 08-07-2012, 11:12 PM   #23
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Originally Posted by jgorm
sorry, but there are no gains you will feel with your butt. I did the same thing on my dyno. I will say that I'd buy the spectre intake (or diy fab one if I had more time) again in a second.
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Spectre is what I'll be getting. That or a snorkel with prefilters.

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