KN Intake Install (Pics as requested!)

D16RR

New member
As per requested, here's a detailed step by step with pics of the KN install, not that it's too difficult, but there was a small mishap or two, but Ill get into that later.

Remove the motor cover (pops right off)

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Unplug MAF, crank case breather and fuel pressure vent hose

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Remove bolt that mounts stock intake bracket to the top o' the motor

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Loosen Intake tube clamp on throttle body, remove air box lid, and pull it all off. (Make sure you've popped off the retaining clips that held the MAF onto stock assembly)

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Remove the 3 screws that mount the Stock airbox (2 inside, one outside on back of it)

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Install 3 Rubber Bumpers where the airbox bolts were

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Install Rubber bumper on side mount where on mine the horn mounts to

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*note, I put the horn on the inside of the bumper and fender, found out later, that was not to be the case, has to go between rubber bumper and new airbox.


Install filter mount and bracket

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Install other bracket and mount into engine bay

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Correct Horn Placement

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Intake Coupling on Airbox side

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Intake Coupling TBody Side

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Remove MAF from stock massive intake assembly and install it on the new Intake

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and nowwww the fun part:
KN provides 2 plastic vent mounts. Ones a 5/8"barb to 1/4" thread (crankcase breather), the other a 3/16" barb to 1/4" (fuel pressure vent hose).

Since I got the metal not plastic intake, and the metal is chromed, there's a little bit of fighting starting the plastic breathers. Apparently I'm Hulk with my hands, and somehow overtightened and it sheared cleannnnn off.

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FML...its 8pm and a tuesday night. I live local to Summit Racing, but the guy there was pretty much useless and couldnt match it up. I run to home Depot, and find the correct replacement for the 3/16" Barb, but not the one I snapped, the 5/8"
 
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I do however find a 5/8" barb to 1/2". Then add a 1/2" to 1/4" coupling, and then a 1/4" dbl sided threaded insert... Hokey, but gets me through till I can order the right thing....and they're brass and wont snap off with hand threading :ak472:

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About an 1" longer than I'd like, but it worked and doesnt interfere.

Reattach the 2 Breather Hoses

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Mount the KN Filter (this thing is gargantuan)

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Mount the lid

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Mount the engine cover

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Ta da... So long story short, dont **** around with the plastic inserts, order the brass ones as soon as you order the intake. Otherwise, the whole thing looks great. Sounds gnarly, definitely more pickup on accel. I'll let you know about MPG once I do a full tank run.
 
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Just curious but how is this an improvement? The stock air box was pretty similar and looks like a cold air intake already. The only real difference seems to be the shape of the filter. Does this mod actually make any difference?
 
Thanks for a great write up and pictures, looks neat and shiney, one quick question.
What made you go for the chrome intake, my "limited" experiance on air intake systems is that you want colder denser air into your TB not warm air. I would think the chrome intake would heat the air a little.
I have to admit though it looks nice.
 
Just curious but how is this an improvement? The stock air box was pretty similar and looks like a cold air intake already. The only real difference seems to be the shape of the filter. Does this mod actually make any difference?

They claim 13 hp, ill dyno it eventually here and see whats up. MPG was my main concern, supposed to get 2-3 more, and even 1-2 towing is huge for me.

As for impressions, definitely more responsive throttle, and a little more pick up? (could just be my mind haha)

Just got a full tank of gas this AM, Ill let you know the MPG as per my normal driving.

Also....gotta love the sound!
 
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Thanks for a great write up and pictures, looks neat and shiney, one quick question.
What made you go for the chrome intake, my "limited" experiance on air intake systems is that you want colder denser air into your TB not warm air. I would think the chrome intake would heat the air a little.
I have to admit though it looks nice.

Bay...I hate the Chrome lol. It came either Chrome or Black Plastic, i wanted the metal intake, more Becuase I want to powdercoat it. Thinking a crinkle coat red like my old sti had on it, or a crinkle black. I just wanted to get it on for now and see how it did. If i didnt like the intake, I was going to try the TRD one next.
 
Bay...I hate the Chrome lol. It came either Chrome or Black Plastic, i wanted the metal intake, more Becuase I want to powdercoat it. Thinking a crinkle coat red like my old sti had on it, or a crinkle black. I just wanted to get it on for now and see how it did. If i didnt like the intake, I was going to try the TRD one next.

Sounds good I like the idea of the red crinkle coat. Post pictures when u get it done.
 
I like it. I may have to do this to my 5th gen like I did with my 3rd gen. Keep us posted on your thoughts over time.
 
ok so ran through 2 full tanks, one everyday normal driving (5 mile commute, typical errands and etc), half a tank on the highway and half a tank highway towing my enclosed, twin axle 2 motorcycle trailer. Getting 1.3-1.5mpg better driving round town (17 to18.5), highway is 2.0-2.3 (20.5 mpg to 22.5-22.8) and towing was kind of all over the place, was going to Nelsons Ledges Road Course which is half highway half hilly backroads but was getting 2mpg better on average... I"d say its worth it, and will only take a few months to pay itself off with gas savings (trucks 1.5 months old and already have 3k miles on it)

If you dont care/enjoy the sound of intakes, its definitely a good upgrade...but if you dont want the louder noise, just be warned its got a nice note to it!
 
Because the toyota engineers are going to try and eeek out every last mile of efficiency with the design.

Plus you probably are going to have a hard time light footing the skinny pedal. I know I do.
 
Guys when I put the K & N on my 3rd gen I wasn't concerned about MPG's to be honest with you. I just wanted to get more balls out of it and it sounds great when I get on it and other people wonder what's up too. I like it and I've had it on mine for 5+ years now with no issues what so ever.
I do like having the black plastic tube over the chrome though. Here are some pictures of the K & N on my 3rd gen.

http://www.cardomain.com/ride/2590536/1997-toyota-4runner#25905360012

http://www.cardomain.com/ride/2590536/1997-toyota-4runner#25905360001

http://www.cardomain.com/ride/2590536/1997-toyota-4runner#25905360002

http://www.cardomain.com/ride/2590536/1997-toyota-4runner#25905360016
 
Give it a couple of tanks more and I bet it will be the same as before or less

i would have to agree,

the CIA'S look sweet and sound sweet but i bet dollars to donuts that you didn't gain any hp .

i have been messing with my dodge ram cummins over the years and i have been on the dyno a couple times after mods and the BHAF (What diesel guys call CIA'S ) Didn't make on lick of differnce in HP but! It sounded sweet !!!

Just MHO .

Gary
 

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