No Air Filter - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

BRZ_STI · 07-20-2014, 03:36 PM

Ok this is probably a dumb question but has anyone tried running the car without a filter on it? And if so how did it effect the cars performance and tuning?

D_Thissen · 07-20-2014, 03:42 PM

Probably a negligible difference. Just run a high flow filter and call it a day.

Bobblehead · 07-20-2014, 03:43 PM

There was a thread on this a little while back. If I remember right, the dyno said there was a DECREASE in power, not to mention its not safe to do so.

If you want power, a K&N Filter will do you well.

stugray · 07-20-2014, 03:59 PM

You want a real HP increase?

Try adding hydrazine to your fuel.
Definitely gives you a big HP boost (http://lmgtfy.com/?q=hydrazine+to+your+gasoline), but just about as good an idea as running with no AF.

Lonewolf · 07-21-2014, 12:05 AM

Please don't run without a filter...there is no way you will gain anything of significance, except some crap being sucked into your motor...

gramicci101 · 07-21-2014, 12:11 AM

Quote:

Originally Posted by stugray

You want a real HP increase?

Try adding hydrazine to your fuel.
Definitely gives you a big HP boost (http://lmgtfy.com/?q=hydrazine+to+your+gasoline), but just about as good an idea as running with no AF.

Oh my god, I thought you were kidding at first. Apparently this is a thing that people did. Having dealt with hydrazine in the military, I will do my level best to stay as far away from it as possible. That shit will kill you slowly and make it hurt while you're dying.

Poodles · 07-21-2014, 12:47 AM

Quote:

Originally Posted by BRZ_STI

Ok this is probably a dumb question but has anyone tried running the car without a filter on it? And if so how did it effect the cars performance and tuning?

You're in Texas which is the dust capital of the world. Not just no, but HELLLLLLLLLLLLLLLLLLLLLL NO!

Silica sand is extremely abrasive and causes serious wear.

Quote:

Originally Posted by Bobblehead

There was a thread on this a little while back. If I remember right, the dyno said there was a DECREASE in power, not to mention its not safe to do so.

If you want power, a K&N Filter will do you well.

K&N is crap for filtering fine dust like we have here. "The world's best air filter" is their trademark, it's NOT a true statement. There's far better products on the market (AEM dryflo for example), though most are barely noticeable gains.

N1rve · 07-22-2014, 05:07 AM

Someone tested having a air filter duct taped. Mpg did not suffer but performance did.

if you run with no air filter, expect sand and dust to ruin your engine.

rs999 · 07-22-2014, 07:38 AM

Quote:

Originally Posted by BRZ_STI

Ok this is probably a dumb question but has anyone tried running the car without a filter on it? And if so how did it effect the cars performance and tuning?

07-20-2014, 03:42 PM	#2
D_Thissen Senior Member Join Date: Jan 2014 Drives: '13 Argento FR-S (Sold) Location: Ontario Posts: 2,126 Thanks: 3,209 Thanked 1,439 Times in 855 Posts Mentioned: 19 Post(s) Tagged: 2 Thread(s)	Probably a negligible difference. Just run a high flow filter and call it a day. __________________ My FR-S Build IG: dthissen

07-20-2014, 03:43 PM	#3
Bobblehead Senior Member Join Date: Mar 2014 Drives: 2013 BRZ (gone) 2016 Ford Fusion SE Location: Western PA Posts: 602 Thanks: 522 Thanked 494 Times in 223 Posts Mentioned: 1 Post(s) Tagged: 2 Thread(s)	There was a thread on this a little while back. If I remember right, the dyno said there was a DECREASE in power, not to mention its not safe to do so. If you want power, a K&N Filter will do you well. __________________

07-22-2014, 05:07 AM	#8
N1rve Senior Member Join Date: Oct 2013 Drives: 2019 BMW ///M4 Location: Los Angeles, CA Posts: 2,332 Thanks: 102 Thanked 1,167 Times in 714 Posts Mentioned: 28 Post(s) Tagged: 0 Thread(s)	Someone tested having a air filter duct taped. Mpg did not suffer but performance did. if you run with no air filter, expect sand and dust to ruin your engine. __________________ N1rve 2019 BMW ///M4 - Alpine White \| Sakhir Orange/Black Leather \| M-DCT \| Executive Package \| 19" Black 437M Wheels \| Carbon Fiber Trim \| Sunroof \| Active Blind Spot \| Heated Steering Wheel \| Adaptive M Suspension

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
OEM Subaru engine air filter + cabin air filter	autobrz	Mechanical Maintenance and Tools	6	03-09-2014 10:28 PM
FS: Oiled Panel Filter + AFe Oiled Filter & Kit	JPxM0Dz	Canada Classifieds	0	01-27-2014 12:48 PM
Does anybody know exactly what filter the injen Sri uses? I want to get a new filter	Frsexxxy	Engine, Exhaust, Transmission	13	02-19-2013 11:04 AM
is this the right filter	whitefrs	Mechanical Maintenance (Oil, Fluids, Break-In, Servicing)	2	10-11-2012 10:31 PM
Drop In filter test! Stock, Apexi, No filter	RallySport Direct	Engine, Exhaust, Transmission	14	06-25-2012 03:40 PM

07-20-2014, 03:59 PM	#4
stugray Banned Join Date: Sep 2013 Drives: 2013 GBS BRZ Limited Location: Colorado Posts: 1,925 Thanks: 627 Thanked 1,445 Times in 711 Posts Mentioned: 41 Post(s) Tagged: 0 Thread(s)	You want a real HP increase? Try adding hydrazine to your fuel. Definitely gives you a big HP boost (http://lmgtfy.com/?q=hydrazine+to+your+gasoline), but just about as good an idea as running with no AF.

07-21-2014, 12:05 AM	#5
Lonewolf Senior Member Join Date: Dec 2011 Drives: Moped Location: CA Posts: 4,300 Thanks: 4,905 Thanked 2,132 Times in 1,195 Posts Mentioned: 21 Post(s) Tagged: 0 Thread(s)	Please don't run without a filter...there is no way you will gain anything of significance, except some crap being sucked into your motor...

User Name		Remember Me?
Password