Best aftermarket Air Filter? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

BladeRunner · 08-13-2018, 05:40 PM

I've been thinking about getting a new, aftermarket air filter to replace the stock one.

Wondered which brand is best and if it's worth it in terms of better breathing efficiency & some nominal horsepower increase.

Cosworth or K&N?

mrg666 · 08-13-2018, 05:47 PM

I used K&N when I was NA. There was absolutely no difference in power. Don't waste your money. I would keep using the OEM filter.

Mr.ac · 08-13-2018, 05:48 PM

It's really the same product. Just depends on how much you want to pay or what ever is on sale.

HachiRokuX · 08-13-2018, 06:03 PM

Quote:

Originally Posted by mrg666

I used K&N when I was NA. There was absolutely no difference in power. Don't waste your money. I would keep using the OEM filter.

There’s a thread on here that says it can lead to about a 5whp and 5wtq increase for NA cars.

Sent from my iPhone using Tapatalk

JeremyR · 08-13-2018, 06:14 PM

HKS filter gains you 5 HP and 1 TQ base on their dyno numbers.

Although most filters will net you similar results so go with a brand you trust.

Tcoat · 08-13-2018, 06:21 PM

Quote:

Originally Posted by HachiRokuX

There’s a thread on here that says it can lead to about a 5whp and 5wtq increase for NA cars.

Sent from my iPhone using Tapatalk

That is a very, very optimistic number.
You will get a cooler intake sound that will indeed make you feel like you have more HP but that is about it.

mrg666 · 08-13-2018, 06:24 PM

Quote:

Originally Posted by HachiRokuX

There’s a thread on here that says it can lead to about a 5whp and 5wtq increase for NA cars.

Sent from my iPhone using Tapatalk

Yeah, I believed that and wasted my money. There is no difference, none that I can tell.

BladeRunner · 08-13-2018, 06:30 PM

Quote:

Originally Posted by JeremyR

HKS filter gains you 5 HP and 1 TQ base on their dyno numbers.

Although most filters will net you similar results so go with a brand you trust.

That dyno reference sounds good! But, other members are saying there's no appreciable difference.

I'm still confused though whether or not to upgrade the air filter over the OEM one.

MJones_RB · 08-13-2018, 06:43 PM

I went with the TRD unit since it was the only one to get rid of the intake bend and direct air straight into the throttle body. Not that it makes a HUGE difference I'm sure, but at the time it made sense.

Sasquachulator · 08-13-2018, 06:56 PM

You wont feel any difference.

The induction sound may be more pronounced though, which would make the more expensive filter worth it

RToyo86 · 08-13-2018, 07:04 PM

I went K&N, for cost savings more than anything else.
As long as you maintain it with a recharge kit, it will pretty much last forever.
I kept the new paper filter to swap in when I need to clean it.

DandoX · 08-13-2018, 07:15 PM

I've been buying wix air filters because they have that platic rim that makes a more easy install. They also seem slightly higher quality than oem. These are not reusable, but just a better product than the oem filters. No hp gain just a slightly more expensive filter made to a slightly higher quality standard.
Main takeaway is the plastic lining for a more secure fit.

JeremyR · 08-13-2018, 07:48 PM

Quote:

Originally Posted by BladeRunner

That dyno reference sounds good! But, other members are saying there's no appreciable difference.

I'm still confused though whether or not to upgrade the air filter over the OEM one.

If you don't need a new air filter then I wouldn't bother.

But if you're coming up on a maintenance interval then an "upgraded" filter couldn't hurt.

Chances are you won't feel any performance gains though.

http://www.ft86club.com/forums/showt...ght=air+filter

Mr.ac · 08-13-2018, 08:13 PM

From personal experience I went with the K&N. Just because it was on sale from Walmart for $45.

I only used it for a year because my mpg dropped from 30 to 27. My butt dyno measured a 5 hp gain. Since I was just daily driving I switched back to oem filters and got back my 30 mpg back.

08-13-2018, 05:40 PM	#1
BladeRunner Member Join Date: Aug 2018 Drives: 2015 Subaru BRZ Limited Location: Tucson, Arizona Posts: 37 Thanks: 12 Thanked 10 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Best aftermarket Air Filter? I've been thinking about getting a new, aftermarket air filter to replace the stock one. Wondered which brand is best and if it's worth it in terms of better breathing efficiency & some nominal horsepower increase. *Cosworth or K&N?* Attached Images

08-13-2018, 05:48 PM	#3
Mr.ac [insert cool phrase here] Join Date: Aug 2015 Drives: BRZ Premium Location: Central Coast CA Posts: 2,368 Thanks: 709 Thanked 1,559 Times in 930 Posts Mentioned: 30 Post(s) Tagged: 0 Thread(s)	It's really the same product. Just depends on how much you want to pay or what ever is on sale. __________________ New daily driver - Subaru BRZ Premium Weekend fun/track car - '91 MR2 Turbo Gen3 Old daily driver - '88 MR2 Supercharged

08-13-2018, 06:14 PM	#5
JeremyR Senior Member Join Date: Nov 2012 Drives: 2015 BRZ Limited Location: Bay Area, CA Posts: 484 Thanks: 613 Thanked 269 Times in 181 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	HKS filter gains you 5 HP and 1 TQ base on their dyno numbers. Although most filters will net you similar results so go with a brand you trust. __________________ *REALMS BRZ Build Thread* HKS\|Parts Shop MAX\|Battle Version\|ADVAN\|Beatrush

08-13-2018, 08:13 PM	#14
Mr.ac [insert cool phrase here] Join Date: Aug 2015 Drives: BRZ Premium Location: Central Coast CA Posts: 2,368 Thanks: 709 Thanked 1,559 Times in 930 Posts Mentioned: 30 Post(s) Tagged: 0 Thread(s)	From personal experience I went with the K&N. Just because it was on sale from Walmart for $45. I only used it for a year because my mpg dropped from 30 to 27. My butt dyno measured a 5 hp gain. Since I was just daily driving I switched back to oem filters and got back my 30 mpg back. __________________ New daily driver - Subaru BRZ Premium Weekend fun/track car - '91 MR2 Turbo Gen3 Old daily driver - '88 MR2 Supercharged

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08-13-2018, 06:56 PM	#10
Sasquachulator Pavement Grey Join Date: Dec 2011 Drives: 2020 Toyota Camry XSE, 2017 BMW X1 Location: Calgary Posts: 3,116 Thanks: 109 Thanked 2,256 Times in 1,221 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	You wont feel any difference. The induction sound may be more pronounced though, which would make the more expensive filter worth it

08-13-2018, 07:04 PM	#11
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