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Re: K&N vs Spectre performance air filters [Re: OVERKILL] #5122904 06/02/19 10:21 AM
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DoubleWasp Offline
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Posts: 6,710
Originally Posted by OVERKILL
Originally Posted by DoubleWasp
The second you listed is in fact wrong, but not exactly. My engine does have a throttle, but it doesn't not open to accelerate the engine. Purely an emissions device to help EGR. Wrong, but almost not. πŸ˜‰


Gotcha grin I knew some of them had throttle plates, but they didn't act as a throttle. IIRC, some of the old MACK engines also had trap doors to stop runaway?


Indeed. Pretty smart thing to have.

Pretty much unheard of thing today, unless one overfills the oil by a ridiculous amount.

A turbocharger oil seal failure will do it too. Engine just revs itself to death while eliminating its oil supply.


07 Lincoln Navigator M1 0w-40/FU
68 Charger R/T / Supercharged 440 VR1/DBL7349
07 Ram 3500 4x4 / Cummins 6.7 /DBL7349
17 Maserati GranTurismo Cabrio
Re: K&N vs Spectre performance air filters [Re: DoubleWasp] #5122971 06/02/19 11:15 AM
Joined: Apr 2008
Posts: 40,264
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OVERKILL Offline
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Joined: Apr 2008
Posts: 40,264
Originally Posted by DoubleWasp
Originally Posted by OVERKILL
Originally Posted by DoubleWasp
The second you listed is in fact wrong, but not exactly. My engine does have a throttle, but it doesn't not open to accelerate the engine. Purely an emissions device to help EGR. Wrong, but almost not. πŸ˜‰


Gotcha grin I knew some of them had throttle plates, but they didn't act as a throttle. IIRC, some of the old MACK engines also had trap doors to stop runaway?


Indeed. Pretty smart thing to have.

Pretty much unheard of thing today, unless one overfills the oil by a ridiculous amount.

A turbocharger oil seal failure will do it too. Engine just revs itself to death while eliminating its oil supply.


Yeah, my buddy who wrenches on HD trucks has had to deal with it a couple of times, pretty crazy.


2019 RAM 1500 Sport - Mobil 1 EP 0w-20, FRAM Ultra
2016 Grand Cherokee SRT - Ravenol SSL 0w-40, FRAM Ultra
Re: K&N vs Spectre performance air filters [Re: 007] #5126956 06/06/19 12:13 PM
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Posts: 522
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slybunda Offline
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Are there actually any air filters in existance that flow more than oem but also dont let the dust in?
Some people say aem and afe also let dust in like k&n


1995 Ford Fiesta 1.6i 16v Si
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Re: K&N vs Spectre performance air filters [Re: 007] #5127213 06/06/19 04:36 PM
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DoubleWasp Offline
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I use AEM in conditions so dusty that my truck looks like it's been painted in desert camouflage.

Intake pipe clean to the eye and touch. UOA records no more silicone than my oil VOA does.

I'm using AEM Dryflow. It flows more air only as a result of having at least twice the surface area of the OEM panel filter. Not sure there is any wizardry in the media itself other than being washable.


07 Lincoln Navigator M1 0w-40/FU
68 Charger R/T / Supercharged 440 VR1/DBL7349
07 Ram 3500 4x4 / Cummins 6.7 /DBL7349
17 Maserati GranTurismo Cabrio
Re: K&N vs Spectre performance air filters [Re: grampi] #5136241 06/17/19 01:03 AM
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Denkun Offline
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Originally Posted by grampi
I'm curious to find out if there's any way to increase air flow of a stock air box, but continuing to use the stock paper element. I have never seen any aftermarket high flow filters that filter as well as the OEM paper element, which is why I won't use them...


Remove the charcoal filter inside the airbox. Smooth out the interior with a dremel. Some cars have large resonators so remove them. The air inlet, if it goes directly to cold air leave it alone. If it's a jumbled up mess that goes nowhere then shorten it make sure it's smooth too, install a velocity stack at the end if possible. If you don't care about cold air then remove the inlet snorkel completely and make the hole for it as large as possible

Re: K&N vs Spectre performance air filters [Re: slybunda] #5150070 07/03/19 06:49 AM
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TiGeo Offline
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Joined: Nov 2009
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Originally Posted by slybunda
Are there actually any air filters in existance that flow more than oem but also dont let the dust in?
Some people say aem and afe also let dust in like k&n


Of course they do....you can't have your cake and eat it too. More air flow = less filtering. The better question that isn't ask is "What filtering efficiency is needed for my engine to live a long happy life in the conditions that I operate in?". We are talking about the difference in 99% efficiency (paper) and mid-to-upper 90%s for the high-flow filters....OEM specs paper filters b/c they 1) work well and 2) work well with your average owner who is completely clueless and probably never changes it. Look at the factory performance packs for the muscle and tuner cars - often come with a high-flow filter either oiled or dry. They assume if you are buying a car like that and seek high performance, you likely also will take care of it and handle the cleaning cycle etc. for the performance filter.

Last edited by TiGeo; 07/03/19 06:52 AM.

2018 VW Atlas SEL 4Motion 3.6 VR6 - Castrol OE 5W40 VW filter
2018 VW GSW S 4Motion 1.8 TSI Unitronic St1+ - LiquiMoly 5W40 VW filter
2013 Ford Focus SE HB 2.0 Ti-VCT - MC syn-blend 5W20 MC filter
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