Intake resonance pipe? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Dave-ROR · 12-04-2011, 06:03 PM

tranz: lol I assume the post you quoted was deleted :P

tranzformer · 12-04-2011, 06:06 PM

Quote:

Originally Posted by Dave-ROR

tranz: lol I assume the post you quoted was deleted :P

hahaha, yeah it appears so. lol

Palmy · 12-04-2011, 11:46 PM

Im not quite sure I understand the purpose of an "intake resonance pipe".
You guys are saying its a physical pipe, attached to but not open to the airbox/intake at one and and open to the cabin at the other? And the purpose of this pipe is to increase noise levels in the cabin?
Not sure about you guys, but to me that sounds bloody ridiculous, and Im not even sure I believe such a device exists.
What manufacturer actively tries to increase cabin noise by adding otherwise useless weight? Last time I checked manufacturers installed sound baffle to prevent engine noise from comming into the cabin.
Just sayin.

serialk11r · 12-04-2011, 11:51 PM

LFA does it, I think a bunch of other sports cars do too. Personally, I think it's stupid. You can just make the exhaust louder by making it simpler and cheaper and lighter instead of adding some stupid tube.

whitejdm · 12-04-2011, 11:54 PM

Quote:

Originally Posted by Palmy

Im not quite sure I understand the purpose of an "intake resonance pipe".
You guys are saying its a physical pipe, attached to but not open to the airbox/intake at one and and open to the cabin at the other? And the purpose of this pipe is to increase noise levels in the cabin?
Not sure about you guys, but to me that sounds bloody ridiculous, and Im not even sure I believe such a device exists.
What manufacturer actively tries to increase cabin noise by adding otherwise useless weight? Last time I checked manufacturers installed sound baffle to prevent engine noise from comming into the cabin.
Just sayin.

Actually they do exist and have for quite some time haha, notable cars include the first gen BMW Z4 and now the Mustangs though I'm sure plenty of other cars make use of it. The purpose of the pipe (which really weighs MAYBE 1lbs) allows the manufacturer to TUNE the intake sound for the driver without increasing NVH levels. It's actually a GREAT compromise to hear a bit more induction noise without hearing everything else going on ahead of the firewall. This will also force aftermarket companies to actually do some R&D and make sure their intake systems PERFORM better rather than just being filter-on-a-tube noisemakers.

Snaps · 12-05-2011, 02:21 AM

A lot of you guys sound like you think it directs EXHAUST noise into the cabin?

That's not what it does at all, by the looks of it... it's attached to the air intake for the engine, that pipe goes to a box which allows no airflow, but does allow the transfer of sound waves (vibrations) - this is the large cylinder you see beside the left bank of the intake manifold.

From this cylinder, it looks like there is a pipe that I assume attaches to somewhere on the firewall. This would be used to transfer the vibrations from the cylinder into the cabin, to increase INTAKE noise (like changing to an aftermarket pod filter), NOT to increase EXAHUST noise.

As for removing it... I think I will, when I install a straight intake pipe with a custom cold airbox, that should give a bit more sound, flashen up the engine bay a bit, along with changing the torque curve a little (hopefully an increase?) because of the unobstructed flow for the air.

Ak1m0to · 12-05-2011, 04:09 AM

Most of the time it's to help keep the car quieter, less engine noise within the cabin.
That's all it does, I deleted mine when I had a Civic to reduce some weight.

12-04-2011, 06:03 PM	#15
Dave-ROR Site Moderator Join Date: Dec 2010 Drives: Stuff Location: Florida Posts: 10,317 Thanks: 955 Thanked 5,965 Times in 2,689 Posts Mentioned: 262 Post(s)	tranz: lol I assume the post you quoted was deleted :P __________________ -Dave Track cars: 2013 Scion FRS, 1998 Acura Integra Type-R, 1993 Honda Civic Hatchback DD: 2005 Acura TSX Tow: 2022 F-450 Toys: 2001 Chevrolet Corvette Z06, 1993 Toyota MR2 Turbo, 1994 Toyota MR2 Turbo, 1991 Mitsubishi Galant VR-4 Parts: 2015 Subaru BRZ Limited, 2005 Acura TSX Projects: 2013 Subaru BRZ Limited track car build FS: 2004 GMC Sierra 2500 LT CCSB 8.1/Allison with 99k miles

12-05-2011, 02:21 AM	#20
Snaps Supra Owner Join Date: Sep 2010 Drives: 1995 Toyota Supra UK Spec Location: New Zealand Posts: 440 Thanks: 0 Thanked 6 Times in 3 Posts Mentioned: 0 Post(s)	A lot of you guys sound like you think it directs EXHAUST noise into the cabin? That's not what it does at all, by the looks of it... it's attached to the air intake for the engine, that pipe goes to a box which allows no airflow, but does allow the transfer of sound waves (vibrations) - this is the large cylinder you see beside the left bank of the intake manifold. From this cylinder, it looks like there is a pipe that I assume attaches to somewhere on the firewall. This would be used to transfer the vibrations from the cylinder into the cabin, to increase INTAKE noise (like changing to an aftermarket pod filter), NOT to increase EXAHUST noise. As for removing it... I think I will, when I install a straight intake pipe with a custom cold airbox, that should give a bit more sound, flashen up the engine bay a bit, along with changing the torque curve a little (hopefully an increase?) because of the unobstructed flow for the air. __________________

12-05-2011, 04:09 AM	#21
Ak1m0to G20 Guru Join Date: Nov 2011 Drives: Infiniti G20 / FRS Location: Houston, TX Posts: 71 Thanks: 1 Thanked 4 Times in 4 Posts Mentioned: 2 Post(s)	Most of the time it's to help keep the car quieter, less engine noise within the cabin. That's all it does, I deleted mine when I had a Civic to reduce some weight. __________________ Slowmatic Drfiterz, from P to D in a heartbeat.

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12-04-2011, 11:46 PM	#17
Palmy Senior Member Join Date: Dec 2011 Drives: '12 86 GTS (AUDM) Location: Sydney Posts: 253 Thanks: 10 Thanked 42 Times in 31 Posts Mentioned: 0 Post(s)	Im not quite sure I understand the purpose of an "intake resonance pipe". You guys are saying its a physical pipe, attached to but not open to the airbox/intake at one and and open to the cabin at the other? And the purpose of this pipe is to increase noise levels in the cabin? Not sure about you guys, but to me that sounds bloody ridiculous, and Im not even sure I believe such a device exists. What manufacturer actively tries to increase cabin noise by adding otherwise useless weight? Last time I checked manufacturers installed sound baffle to prevent engine noise from comming into the cabin. Just sayin.

12-04-2011, 11:51 PM	#18
serialk11r Senior Member Join Date: Mar 2011 Drives: '06 AM V8V Coupe Location: United States of America Posts: 5,279 Thanks: 285 Thanked 1,075 Times in 759 Posts Mentioned: 13 Post(s)	LFA does it, I think a bunch of other sports cars do too. Personally, I think it's stupid. You can just make the exhaust louder by making it simpler and cheaper and lighter instead of adding some stupid tube.

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