Which is better? Performance? Bang for the buck? Is the K&N that much better, to make up for the price difference?
Turbo City VS. K&N FIPKII
Blaze
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i guess i'm just cheap, but like a lot of other guys around here, i made a custom intake and got wonderfull performance gains for only $60, most of which was the K&N cone filter alone!
i don't think you would get much more performance at all for the added $200. but you would get a smog approved system.... NOT an issue around here.
But to answer the question - I would prefer the K&N because of the placement of the filter... it's located in the same place as the factory airbox and should be in a better position to suck in cooler air than the t/c version. But then my experience only comes from the 4.0 version... V8's may be a little different.
i don't think you would get much more performance at all for the added $200. but you would get a smog approved system.... NOT an issue around here.
But to answer the question - I would prefer the K&N because of the placement of the filter... it's located in the same place as the factory airbox and should be in a better position to suck in cooler air than the t/c version. But then my experience only comes from the 4.0 version... V8's may be a little different.
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275 Posts
I'm runnin tc w/ 5.9 and love it! with all the add ons, my mpg dropped to ~9mpg. The tc increased it to 13.5+ plus noticeable gain in hp. I don't have any knowledge of the K&N besides friends fods&chevys but they didn't receive near the gain I did. anyhow, good luck with your decision. Also, the tc dual filter loooks bad ass! later.
it's apples and oranges...they are two good intakes. However, the TC does suck warmer air through than the FIPK. Horsepower is greater with the FIPK but as far as I am concerned, the TC is a decent buy too. I think it is in an area a little less susceptible to mud, etc, plus, it frees your old airbox space up completely! This means an extra battery, pa system, or whatever tickles your fancy! I have a FIPK with NO problems, but if I did it all again, I'd try out the TC, just because of that extra space and I think it looks cooler. Either choice is a good one.
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424 Posts
K&N GENII FIPK HERE, just installed it Weds, now Sat, I love it.....above 2500 Rpms sounds Great !!! I get some great looks too !!!!
AprilzWarrior
AprilzWarrior
No offence intended Bender, but thats just a K&N marketing gimick. I agree that the location of the K&N and its insulated box can make some difference as far as the air intake temperature, but this stuff about the fact that the K&N is palstic and transfers less heat than the TC because it is metal is a pile. The air flowing through the tube flows way too fast for a significant heat transfer to take place into a gas (air). Now the fact that the K&N actually pulls air from the outside, that actually will make a difference.Bender said:
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The plastic not transferring as much heat as metal is a pile? Try this, hold an empty soup can in one hand, and a platic cup in the other hand and get 2 people to pour boiling water into both at the same time, see which one you can hold onto the longest. how much power the plastic air pipe and heat shield gives you over metal may be small, but it definatly exists.
Jon
Jon
I agree that it definitely exists, but lets be realistic. At the velocity air is travelling through the intake tube, the heat transference is minimal. In your example you are also referring to water, not air. For your example to be correct you would have to use the same cups and pour different temperature gases in them. Why do you think air and other gases make relatively good insulators? They do not absorb or transfer heat well. Look up the specific heat capacity of air and you'll see what I mean. In a heat gun or hair dryer, in order to raise the temperature of the air significantly, the filament has to hundreds of degrees in temperature hotter than our engines (glowing hot) and the air must still flow signifcantly slower than that our intakes do.Canadian Muscle said:
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I just ordered the TC yesterday from a JU member for $60 shipped. only used a couple months. good deal I think.
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Uh.....sorry, but cold air intakes...do do SQUAT when in 4wheel low..
you have to get up to about 40-=45mph, in order for the "ram air" effect to take place...
over about 60, the intake temperatures are about the same because there is enough air flow to keep under the hood cool..
I like the TC, cause
#1 it filters better..
#2, the intake is higher, so less chance of sucking in mud and water.
#3 it frees up the factory air box space and gives room for onboard air and arb solenoids..
#4, my KN eventually started splitting.....I havent had any problems with the TC, and the dual tube units for Zj's are painted with a crinkly oven type paint which helps with the minimal heat transfer.
BTW, on repeated tests with a pyrometer, at 65mph on the Freeway, there was only a 2 degree difference in air temperature (at the throttle body) between the 2 units, not sure how much supposed HP that is, but it aint much.....
KN...very good marketing.....
you have to get up to about 40-=45mph, in order for the "ram air" effect to take place...
over about 60, the intake temperatures are about the same because there is enough air flow to keep under the hood cool..
I like the TC, cause
#1 it filters better..
#2, the intake is higher, so less chance of sucking in mud and water.
#3 it frees up the factory air box space and gives room for onboard air and arb solenoids..
#4, my KN eventually started splitting.....I havent had any problems with the TC, and the dual tube units for Zj's are painted with a crinkly oven type paint which helps with the minimal heat transfer.
BTW, on repeated tests with a pyrometer, at 65mph on the Freeway, there was only a 2 degree difference in air temperature (at the throttle body) between the 2 units, not sure how much supposed HP that is, but it aint much.....
KN...very good marketing.....
I made a homemade FIPK for my V8 for WAY less than the $290 FIPK II. I did exactly what Chet did on Grand Cherokee Unlimited.
http://jeepsunlimited.com/zj/kandnold/knold.htm
http://jeepsunlimited.com/zj/kandnold/knold.htm
My .02......
I have heard from several users of the K & N systems that they found dirt or sand downstream from the filter (maybe they could actually clean them once in awhile...).
I just cleaned both of my filters tonight. They had all kinds of dirt and junk on them.
The filter recharge kit is so incredibly easy to use.
Hunter :ZJ:
I have heard from several users of the K & N systems that they found dirt or sand downstream from the filter (maybe they could actually clean them once in awhile...).
I just cleaned both of my filters tonight. They had all kinds of dirt and junk on them.
The filter recharge kit is so incredibly easy to use.
Hunter :ZJ:
No TC experience... Love my K&N FIPK Gen II... Dyno'd at 26HP gain (supposedly)... Doesn't help much w/ low-end, but really, i mean DRAMATICALLY helps your top end... Just get a performance ECU to take advantage of the extra air and you'll be set 
even though w/o a chip it still kicks some serious @$$! :thumbsup:
--TIM
even though w/o a chip it still kicks some serious @$$! :thumbsup: --TIM
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567 Posts
The FIPK flows COOLER air, but the TC flows MORE air. Which is more important? I would have to say that the volume of air is much more important than the temperature, especially with such a minimal temperature difference. Not to mention the shorter intake pipes on the TC for less restriction. Also it is cheaper, looks better, and gives you more room under the hood!!
not so much...
I'm going to have to disagree.
Maybe it's just me, but i think the TC looks cheap.
And to the comment of volume of air being "much more important" than the temperature? not quite.
Your engine needs air for the oxygen content and as we all learned in high school physics, cold air is MUCH more dense and contains much more oxygen per cubic inch than hot air. and the difference from outside air and the air right above the block is VERY significant.
Either way, you're still restricted by the size of your throttle body, and even if you've got a 52mm TB flowing 900 cfm... you're going to want as much oxygen as possible in there, and you're going to get that with much colder air.
I was also told, when considering fabbing a custom functional hood scoop, that the longer, thicker air tube leading from the TB to the filter assisted in the improvement.
There's a reason that fuel injected vehicles don't have filters right above the engine block...
Just my .02
--Tim
I'm going to have to disagree.
Maybe it's just me, but i think the TC looks cheap.
And to the comment of volume of air being "much more important" than the temperature? not quite.
Your engine needs air for the oxygen content and as we all learned in high school physics, cold air is MUCH more dense and contains much more oxygen per cubic inch than hot air. and the difference from outside air and the air right above the block is VERY significant.
Either way, you're still restricted by the size of your throttle body, and even if you've got a 52mm TB flowing 900 cfm... you're going to want as much oxygen as possible in there, and you're going to get that with much colder air.
I was also told, when considering fabbing a custom functional hood scoop, that the longer, thicker air tube leading from the TB to the filter assisted in the improvement.
There's a reason that fuel injected vehicles don't have filters right above the engine block...
Just my .02
--Tim
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37 Posts
MuddyV8ZJ I have to AGREE with you. This is my first JEEP...Offroad....4 wheel drive vehicle before this I was always into Foriegn perfomance cars....The denser the air the more oxygen...the more oxygen the higher numbers you get HP wise. Theres a reason why CAI are more expensive than short ram air intakes the longer the tube the colder the air is coming in. If you think more hot air is better than less cold air your SSSOOOO wrong!!!! No matter what size tubing you use your TB will still cut you back down to size!!! Heat is one of your engines biggest enemys. Ever been to the track??? They literally put bags of ICE on the intake pipe, intake manifold, the turbo set-ups etc etc... So yes the METAL pipe does effect the air temp in that little tube big time compared to a plastic one. Go to a couple of perfomance sites and start mouthing off to those guys about which tubes are the best...they will tell you K&N and AEM Both Plastic and smooth on the inside for better airflow. Not MEtal. METAL/Polished CAI are for looks only not perormance!!! You want numbers get plastic!!! I know they are a bunch of ricers but they are geniuses when it comes to HP/TQ numbers they do the littlest things for even half a horsepower!! Its nuts. Do some more research. And yes everyone is right at 4low it doesnt make as big a difference as it does when your doing 50+ but it still makes a huge difference. At neweclipse.org they measured the different temps on the different CAI at the TB. I told you they were nuts. Thats where I learned so much. I used to have the same attitude till a few of those Car Scientists put me straight.
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