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Old 06-12-2009, 08:10 AM   #1
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K&N FIPK Legal in CA?

Hi everyone,

I live in New York and just bought a 2005 Wrangler Unlimited with the 4.0 liter. I am moving to California in a year or so, and was wondering if the K&N FIPK intake for the 4.0 liter and this model year passes CA emissions and is 100% street legal? I did a search, but couldn't find anything. Thanks!

-Dylan

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Old 06-12-2009, 10:37 AM   #2
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Yes, they are legal.

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Old 06-12-2009, 10:45 AM   #3
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OK, Thanks!
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Old 06-12-2009, 12:56 PM   #4
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Being legal is about the only good thing that can be said, I dont think you will notice $275.00 worth of performance gain, but then again if it was on there when you bought the jeep thats different. If you are thinking of buying one then do some more homework before spending that much money.

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Old 06-12-2009, 05:45 PM   #5
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They are legal in Calif. so long as it has the CARB (Calif. Air Resources Board) sticker of approval on it. But I agree with 30-284, they're not worth $2.75 let alone $275. While such products can help on some vehicles like a HP 5.0L Mustang which has a very restrictive air intake system, they don't help on the Jeep's 4.0L engine since it already has a totally non-restrictive air intake system. In other words, it won't help at all except to those highly suceptible to the placebo effect.
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Old 06-15-2009, 07:07 AM   #6
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OK, thanks guys. Good to know! I'll save my coin
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Old 06-15-2009, 09:04 AM   #7
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Just curious if there is any other makes besides K&N for the Wrangler?
Im not to fond of oiled filters.
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Old 06-15-2009, 08:35 PM   #8
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Old 06-16-2009, 09:46 PM   #9
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Quote:
Originally Posted by donnie View Post
Just curious if there is any other makes besides K&N for the Wrangler?
Im not to fond of oiled filters.
Good, stick with a paper element air filter like from AC-Delco and your engine will thank you. I wish I could still run a paper element air filter like you use in the OE filter box but I can't with the York OBA compressor that is in the way. The only decent filter I can find that fits my air tube is a Trueflow, I wish I could just run a paper air filter. My wheeling conditions are just too dusty for anything else. So even over the top of my Trueflow I have two pre-filters on top of each other. A foam Unifilter and an Outerwears. Dust is a PITA to try to keep out of the engine when you can't run a paper element filter.
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Old 11-14-2009, 07:37 PM   #10
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Jerry, I did notice improved throttle response after I installed an AFE CAI system on my Rubicon.
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Old 11-14-2009, 07:43 PM   #11
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^lets see the before and after dyno.

I believe that most (if not all) of the response you are sensing is the extra noise you hear when the engine is sucking on that open/unboxed filter.

I ran a KN CAI w/filter for over a year and went back to stock 3-4 months ago. No difference in MPG or any other thing my poorly tuned butt dyno can detect. But, my intake tube and throttle body is MUCH cleaner!
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Old 11-15-2009, 06:58 PM   #12
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Throttle response, per say, isn't noise. It's that "jump" my poorly tuned butt dyno feels in the lower gears. That's all I have to go by, as I don't have access to a dyno.
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Old 12-12-2009, 07:30 PM   #13
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Jerry, I did notice improved throttle response after I installed an AFE CAI system on my Rubicon.
I'm betting your butt dyno was heavily affected by the ever elusive placebo effect.
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Old 01-07-2010, 08:53 AM   #14
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I'm betting your butt dyno was heavily affected by the ever elusive placebo effect.
Yup, The sugar pills have struck again!

Donn

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