04-14-2018, 05:29 AM
|
#1
|
|
Member
|
|
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
|
|
Member
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
|
K&N Performance intake on V6 in California?
It bums me out that the only filter K&N offered for my 2007 V6 that is California street legal is a drop-in. Lame.
So, I did some digging and I found this
https://www.knfilters.com/mobile/mPr...cid=ADDCABINAI
Interesting.....has anyone else tried using this? Looks like it will just plug right in and replace stock air train.
|
|
Reply With Quote
|
04-14-2018, 12:01 PM
|
#2
|
|
Senior Member
|
|
Join Date: May 2010
Location: Nor Cal
Posts: 1,636
|
|
Senior Member
Join Date: May 2010
Location: Nor Cal
Posts: 1,636
|
Have you removed the charcoal filter
Quote:
Originally Posted by 81runner
It bums me out that the only filter K&N offered for my 2007 V6 that is California street legal is a drop-in. Lame.
So, I did some digging and I found this
https://www.knfilters.com/mobile/mPr...cid=ADDCABINAI
Interesting.....has anyone else tried using this? Looks like it will just plug right in and replace stock air train.
|
in the airbox yet? might save you that $313 with some of the same results
Observations after removing the hydrocarbon filter
|
|
Reply With Quote
|
04-14-2018, 12:58 PM
|
#3
|
|
Member
|
|
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
|
|
Member
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
|
HCF was deleted a year ago when I picked up the truck. And a k&n drop in replaced the paper filter. The issue here, is the restriction from the factory air intake tube and surface area of the drop in versus the cone shaped filter and smooth tubing in this kit. In my experience, the drop in filter never performs the same as a full intake kit. Proved it on a 99 Ranger and my 2004 corolla. Massive difference in throttle response, improved fuel economy.
|
|
Reply With Quote
|
04-14-2018, 04:19 PM
|
#5
|
|
Member
|
|
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
|
|
Member
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
|
[QUOTE=BackOff;2958994]Most on here...T4R.org, think these are snake oil.
Not sure about the one you posted but the series 63 is the one for our v6 4runners I believe. Have had one on for 5+ years.
https://www.knfilters.com/search/pro...x?prod=63-9023
This is not a street legal option for California. I will definitely look into rhe MAF and TB spacer. Thanks for the input.
|
|
Reply With Quote
|
04-15-2018, 03:41 AM
|
#6
|
|
Elite Member
|
|
Join Date: Sep 2005
Location: Oakland CA
Age: 36
Posts: 5,073
|
|
Elite Member
Join Date: Sep 2005
Location: Oakland CA
Age: 36
Posts: 5,073
|
you can try to use the afe brand intake, i like it since its the same as the trd version. also just need to change out every smog. couple of bolts really.
__________________
Pioneer DEH-80PRS,Rockford Fosgate T600-2,Hertz ML 1650.3(2 pairs),T400-2,Hertz ML 280.3(2 pairs),T1000-1bdcp,(2)JL Audio 12W6v3, Mechman 240a HO Alternator, Dual Northstar 31m,Borla Dual Exhaust,AFE Magnumforce intake.Enkei WT-4 Michelin Defender LTX 275/55R20. retrofitted S2000 projectors,Philips 85122 White Vision,Morimoto 5Five Ballast.Diode Dynamics SS3 Yellow Fog Sport.2 pairs of Hella Supertones.Full led conversion on interior and exterior.HAWK Talon Rotors and LTS pads F+R,Stoptech stainless steel lines F+R.Bilstein 5100 @0.85, MOOG FJ Springs front,Bilstein B12 36-281824 rear .
|
|
Reply With Quote
|
04-15-2018, 04:06 AM
|
#7
|
|
Elite Member
|
|
Join Date: Feb 2011
Location: Bend, OR
Posts: 9,902
|
|
Elite Member
Join Date: Feb 2011
Location: Bend, OR
Posts: 9,902
|
Not sure if I'd call it snake-oil exactly. But I wouldn't expect any real performance gains or losses from the K&N. The real restriction is the throttle body, the intake hose is similar in diameter to the throttle body opening (maybe a couple mm larger or smaller I haven't measured it in a long time), so volume isn't the issue here. I suppose you could argue turbulence from the resonators and the uneven surfaces of the intake tube, but I doubt it's significant enough on a stock engine.
As
@ BackOff
stated, you'll need a modified MAF for real gains in performance. I'm not sold on K&N (or any oiled filter for that matter) or "performance" filter's claims regarding being cleaner than a stock filter nor that their tacky oil doesn't get into the intake (whether or not it causes issues is debatable).
~
As for the HFC mod? Eh, I have yet to see any scientific data to prove anything regarding that mod besides reducing escaping hydrocarbons from the intake side of the engine.
Post Note-
I don't know if the V6's do this, but I have started noticing that all the K&N cone-style filters on the Tundra/Sequoia 3UR-FE's whistle at minor throttle input.
|
|
Reply With Quote
|
04-15-2018, 11:19 AM
|
#8
|
|
Member
|
|
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
|
|
Member
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
|
I can confirm the cone shaped filters made my ranger whistle, my corolla too. My brother has one on his dinosaur 2001 f150 as well, it still whistles 240,000 miles later, it was one of the first mods he did to it.
|
|
Reply With Quote
|
04-15-2018, 05:16 PM
|
#9
|
|
Senior Member
|
|
Join Date: Dec 2012
Location: Earth, Central Oregun
Age: 53
Posts: 1,198
Real Name: Derek
|
|
Senior Member
Join Date: Dec 2012
Location: Earth, Central Oregun
Age: 53
Posts: 1,198
Real Name: Derek
|
That's nice, a tube with an air-filter and it is off-road only...how is it really any different that any other design? Dumb.
I guess that URD MAF is off-road only too...sorry, not much help from me.
Throttle body.
4th gen V-6 has a 65mm(63mm actual)
At some point they got a 70mm(68mm actual) URD has an adapter for it.
The V-8 has 76mm.
The V-6 intake manifold is 68mm.
The K&N tube(series 63) is 68mm.
I never noticed any whistling...what like Andy Griffith show?
...or any over oil issue.
Some one just posted a pic, the HCF actually stopped a mouse that was digging in deep, went through the stock air filter...K&N has a metal mesh...
Here is the 65mm next to the 70mm.
__________________
2004 T4R 4x4 SR5 v6
Some modifications.
Black-N-Blue
|
|
Reply With Quote
|
04-16-2018, 01:12 PM
|
#10
|
|
Member
|
|
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
|
|
Member
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
|
Quote:
Originally Posted by BackOff
That's nice, a tube with an air-filter and it is off-road only...how is it really any different that any other design? Dumb.
I guess that URD MAF is off-road only too...sorry, not much help from me.
Throttle body.
4th gen V-6 has a 65mm(63mm actual)
At some point they got a 70mm(68mm actual) URD has an adapter for it.
The V-8 has 76mm.
The V-6 intake manifold is 68mm.
The K&N tube(series 63) is 68mm.
I never noticed any whistling...what like Andy Griffith show?
...or any over oil issue.
Some one just posted a pic, the HCF actually stopped a mouse that was digging in deep, went through the stock air filter...K&N has a metal mesh...
Here is the 65mm next to the 70mm.
|
No worries, I appreciate all the input. And yes, CARB is pretty silly. Case in point: on my 2004 corolla, cold air intake is not street legal, but ram air is?! Ya, that's right. Shoving a whole bunch of air down your engine's throat is ok, but cold air BAAADDD!!! What is the point? Don't get it.
I wonder how big my throttle body is...
__________________
2007 SR5 V6 4WD 205k, Titanium Metallic. 5100s, OME 885/895, extended rear links, ST Maxx 255/75 R17 on 17x8s, mud flap delete,TB spacer, Spectre CAI, DRL delete, HCF delete, DAC delete, K&N cabin filter, TPMS bypass, Fog light mod, USB galore, dash cam, LED lights all over, rear bumper lights, cbi ditch light brackets w/lights, atrac off, OBA w/2 gallon tank/hidden hook up, Trailgear welded sliders, Rocksteady skids, custom swing-out, 3⁰, SE hood w/working vent, Sprint booster, JET MAF, Kenwood TM-V71a w/motorized antenna, custom dual battery, custom roof rack/lights, custom TRED mount, external 12v, rear diff breather, pck, Freedom UCAs, custom stereo, Aluminum rad, trans cooler, 240A alternator...for now...
|
|
Reply With Quote
|
04-16-2018, 02:30 PM
|
#11
|
Member
|
|
Join Date: Mar 2015
Location: Sacramento CA
Posts: 683
|
|
Member
Join Date: Mar 2015
Location: Sacramento CA
Posts: 683
|
(From another dumb thread about "cold air" intakes)
I dyno tested my supercharged 3.4 tacoma with all the aftermarket "cold air intakes" manufactured at the time. This would be in 2009. The dyno results conclusively showed that literally EVERY SINGLE ONE caused the engine to lose between 5-8 horsepower and the K&N drop in filter caused the engine to lose 4 horsepower. This is all dyno proven and we completely removed the filter to be sure, which caused a loss of 2 horsepower. The factory filter provided the most power in all cases.
The design of the factory intake has nothing to do with the volumetric flow of air going into the engine and everything to do with maintaining consistency of the laminar flow of air across the mass air flow sensor to prevent erratic fuel corrections due to low pressure losses caused from turbulence.
I also herd on teh internetz dat da blue intakes make 15hp more than the red intakez dawg! And it hella matchez my spoilerz and fast and furious racing stripez!
__________________
2005 Blue SR5 v8
3" suspension lift, 1" body lift, 315's, rear Elocker, on-board air system, slider air tanks, full skid plates, front Demello bumper, rear HMF plate/tube bumper, rear 9000lb hidden winch, front 10000lb winch, dual electric fans (in cab adjustable temp), rock lights, 25W LED projector lights.
|
|
Reply With Quote
|
04-16-2018, 09:25 PM
|
#12
|
|
Elite Member
|
|
Join Date: Feb 2011
Location: Bend, OR
Posts: 9,902
|
|
Elite Member
Join Date: Feb 2011
Location: Bend, OR
Posts: 9,902
|
@ BackOff
I honestly haven't heard it on any 4Runners yet. But I just had 2 Tundras last week and one today that had K&N Filters and at about 10% throttle application (which on those 3UR-FE is basically coasting/non-aggressive driving) there's an annoying whistle/squeal that echos out of the filter itself. I am guessing the lack of resonance chambers and more uniform interior surface is echoing a natural whistle caused when the throttle body is at such low throttle angles and it exists out of the filter cone.
I only notice it on the 3UR-FE Tundra/Sequoias, it might be apparent on other engines; but more than likely no one notices it because you're rarely going to be at that low a throttle application on most other engines.
Like I said I only noticed it because a customer had installed a K&N and complained about it and we definitively were able to notice it out the filter and compared it to a similar Tundra. Ever since then I can tell if a Tundra/Sequoia has a K&N filter without ever popping the hood because of it. I imagine most guys either learn to live with it or just drive aggressively and rarely notice it; but you're just being lax/easy driving it's there most of the time cruising. Not a huge deal, but more an interesting quirk I noticed.
|
|
Reply With Quote
|
04-17-2018, 05:51 PM
|
#13
|
|
Member
|
|
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
|
|
Member
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
|
Answers at last!
Ok, so after speaking with a friend of mine who runs the smog shop in town I learned the following:
For an AM component to be street legal in Comiefornia, it must have an Executive Order number (EO), and it must match the vehicle for which it is intended in the CARB database, which you can access on their website. So, for the rest of the v6 4th gens in the Golden State, I did some digging and felt like sharing my research.
https://rover.ebay.com/rover/0/0/0?m...2F372006591539 cold air intake
https://rover.ebay.com/rover/0/0/0?m...2F301813189609 MAF sensor upgrade
https://rover.ebay.com/rover/0/0/0?m...lk%2Fitm%2F182 throttle body spacer.
Based on everything I have read, the combination of all three would be required to see any benefit.
Thanks to all who offered input, hope this helps others in my situation. Gotta love California....
__________________
2007 SR5 V6 4WD 205k, Titanium Metallic. 5100s, OME 885/895, extended rear links, ST Maxx 255/75 R17 on 17x8s, mud flap delete,TB spacer, Spectre CAI, DRL delete, HCF delete, DAC delete, K&N cabin filter, TPMS bypass, Fog light mod, USB galore, dash cam, LED lights all over, rear bumper lights, cbi ditch light brackets w/lights, atrac off, OBA w/2 gallon tank/hidden hook up, Trailgear welded sliders, Rocksteady skids, custom swing-out, 3⁰, SE hood w/working vent, Sprint booster, JET MAF, Kenwood TM-V71a w/motorized antenna, custom dual battery, custom roof rack/lights, custom TRED mount, external 12v, rear diff breather, pck, Freedom UCAs, custom stereo, Aluminum rad, trans cooler, 240A alternator...for now...
|
|
Reply With Quote
|
04-20-2018, 12:18 PM
|
#14
|
|
Senior Member
|
|
Join Date: May 2010
Location: Nor Cal
Posts: 1,636
|
|
Senior Member
Join Date: May 2010
Location: Nor Cal
Posts: 1,636
|
i remember that 3rd gen mod
Quote:
Originally Posted by 81runner
HCF was deleted a year ago when I picked up the truck. And a k&n drop in replaced the paper filter. The issue here, is the restriction from the factory air intake tube and surface area of the drop in versus the cone shaped filter and smooth tubing in this kit. In my experience, the drop in filter never performs the same as a full intake kit. Proved it on a 99 Ranger and my 2004 corolla. Massive difference in throttle response, improved fuel economy.
|
replacing the intake with a smooth surfaced piece of muffler pipe. Theree a thread around about that mod being done on a 4th gen but without any real conclusive data.
And youre right it did improve throttle response noticeably.
|
|
Reply With Quote
|
12-11-2019, 04:41 PM
|
#15
|
|
Member
|
|
Join Date: Nov 2019
Location: California
Posts: 47
|
|
Member
Join Date: Nov 2019
Location: California
Posts: 47
|
Quote:
Originally Posted by BlackWorksInc
Not sure if I'd call it snake-oil exactly. But I wouldn't expect any real performance gains or losses from the K&N
The real restriction is the throttle body, the intake hose is similar in diameter to the throttle body opening (maybe a couple mm larger or smaller I haven't measured it in a long time), so volume isn't the issue here. I suppose you could argue turbulence from the resonators and the uneven surfaces of the intake tube, but I doubt it's significant enough on a stock engine.
As
@ BackOff
stated, you'll need a modified MAF for real gains in performance. I'm not sold on K&N (or any oiled filter for that matter) or "performance" filter's claims regarding being cleaner than a stock filter nor that their tacky oil doesn't get into the intake (whether or not it causes issues is debatable).
~
As for the HFC mod? Eh, I have yet to see any scientific data to prove anything regarding that mod besides reducing escaping hydrocarbons from the intake side of the engine.
Post Note-
I don't know if the V6's do this, but I have started noticing that all the K&N cone-style filters on the Tundra/Sequoia 3UR-FE's whistle at minor throttle input.
|
Found this interesting youtube link experiment on air filters:
YouTube
__________________
2008 SR5 2wd V6
|
|
Reply With Quote
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is On
|
|
|
|