Keep fresh air scoop? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

zooplane · 04-02-2013, 06:50 PM

I've done the Zeta performance intake tube with a works Motorsport DIF. however, I got rid of my fresh air scoop. Should I keep it on?

EvilBeaverFace · 04-02-2013, 07:00 PM

The stock tube that puts the intake in front of the radiator?

From what I've seen on here everyone says it keeps the intake temps down.

zooplane · 04-02-2013, 07:21 PM

Yeah that one. Really? I took it out and noticed a difference in sound and response. Others?

Lverasky · 04-02-2013, 07:32 PM

I took off my scoop, because it require when I installed the aFe Takeda Intake. Certainly at the low end, the car feel more power at the 1st and 2nd gear.

Kodename47 · 04-03-2013, 05:07 AM

Quote:

Originally Posted by zooplane

Yeah that one. Really? I took it out and noticed a difference in sound and response. Others?

Put it back in! I'll reference you back to my thread here with some actual datalogging on temps and MAF. You'll get the improvement in response by doing the filter alone anyway, by removing the snorkel all you've done is open up the airbox to heatsoak.

EvilBeaverFace · 04-03-2013, 05:09 AM

Quote:

Originally Posted by Kodename47

Put it back in! I'll reference you back to my thread here with some actual datalogging on temps and MAF. You'll get the improvement in response by doing the filter alone anyway, by removing the snorkel all you've done is open up the airbox to heatsoak.

Like I said... this ^^

zooplane · 04-06-2013, 12:40 AM

Injen short ram or perrin CAI with Perrin tube?

wootwoot · 04-06-2013, 02:15 AM

neither.... injen is awful in every way. Perrin is overpriced for what it is IMO. You would get the same performance out of an inlet and drop in filter for much less money.

Scoobyrs25 · 04-06-2013, 01:45 PM

You can have the best of both worlds actually. I removed mine and added a bent piece of aluminum that allowed cold air in and kept the hot radiator air out. Amazing response and now more power throughout the rev band.

Turdinator · 04-06-2013, 07:52 PM

Quote:

Originally Posted by Scoobyrs25

You can have the best of both worlds actually. I removed mine and added a bent piece of aluminum that allowed cold air in and kept the hot radiator air out. Amazing response and now more power throughout the rev band.

Any pics of this?

switchlanez · 04-06-2013, 08:00 PM

The tip of the snorkel (labeled "Fresh Air Scoop" below) resembles a Venturi tube with an entry cone of 30 degrees and exit cone of 5 degrees. Theoretically, this ensures constant air pressure into the airbox for predictable (rather than sporadic) readings to the MAFS. Again, that's theory so take it as you will FWIW. I wonder if people who remove their snorkels know they are losing this Venturi functionality. I sure as hell didn't know when I removed my snorkel til I looked it up.

Velocity stacks in race engines also utilize Venturi openings.

LeeMaster · 04-06-2013, 10:50 PM

Quote:

Originally Posted by wootwoot

.... injen is awful in every way.

What? Why..? I have then Injen and it is definitely not awful in every way.... Got statistics to prove its worthlessness?

Huehuecoyotl · 04-06-2013, 11:15 PM

Quote:

Originally Posted by switchlanez

...venturi..

ding ding

winner

Please stop, youre making way too much sense here.

wootwoot · 04-07-2013, 02:48 AM

Quote:

Originally Posted by LeeMaster

What? Why..? I have then Injen and it is definitely not awful in every way.... Got statistics to prove its worthlessness?

Statistics? Lol... no.... no statistics.

It takes hot air from the engine bay. That is a bad thing. I believe it also produces the leanest AFR of all intakes tested to date. Also a bad thing. Search. Lots of info on this topic already exists. I thought it was common knowledge by now...

04-02-2013, 06:50 PM	#1
zooplane Member Join Date: Sep 2012 Drives: SSM BRZ Location: East Coast Posts: 59 Thanks: 0 Thanked 9 Times in 8 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Keep fresh air scoop? I've done the Zeta performance intake tube with a works Motorsport DIF. however, I got rid of my fresh air scoop. Should I keep it on?

04-02-2013, 07:32 PM	#4
Lverasky RedBunny w/ Wing Join Date: Jan 2013 Drives: FR-S Location: PDX, OR Posts: 962 Thanks: 346 Thanked 179 Times in 155 Posts Mentioned: 22 Post(s) Tagged: 0 Thread(s)	I took off my scoop, because it require when I installed the aFe Takeda Intake. Certainly at the low end, the car feel more power at the 1st and 2nd gear. __________________ Firestorm FR-S MT【PDX, OR】I am just driving in normal speed. dont bother

04-06-2013, 08:00 PM	#11
switchlanez Glorious BRZ Master Race Join Date: Apr 2011 Drives: Subaru Libird Location: Race Wars Posts: 3,645 Thanks: 1,050 Thanked 2,719 Times in 1,079 Posts Mentioned: 110 Post(s) Tagged: 0 Thread(s)	The tip of the snorkel (labeled "Fresh Air Scoop" below) resembles a Venturi tube with an entry cone of 30 degrees and exit cone of 5 degrees. Theoretically, this ensures constant air pressure into the airbox for predictable (rather than sporadic) readings to the MAFS. Again, that's theory so take it as you will FWIW. I wonder if people who remove their snorkels know they are losing this Venturi functionality. I sure as hell didn't know when I removed my snorkel til I looked it up. Velocity stacks in race engines also utilize Venturi openings. Last edited by switchlanez; 05-02-2013 at 12:28 AM.

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04-02-2013, 07:21 PM	#3
zooplane Member Join Date: Sep 2012 Drives: SSM BRZ Location: East Coast Posts: 59 Thanks: 0 Thanked 9 Times in 8 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Yeah that one. Really? I took it out and noticed a difference in sound and response. Others?

04-06-2013, 12:40 AM	#7
zooplane Member Join Date: Sep 2012 Drives: SSM BRZ Location: East Coast Posts: 59 Thanks: 0 Thanked 9 Times in 8 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Injen short ram or perrin CAI with Perrin tube?

04-06-2013, 02:15 AM	#8
wootwoot Senior Member Join Date: Jul 2012 Drives: FRS Location: Cali Posts: 1,558 Thanks: 188 Thanked 462 Times in 264 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	neither.... injen is awful in every way. Perrin is overpriced for what it is IMO. You would get the same performance out of an inlet and drop in filter for much less money.

04-06-2013, 01:45 PM	#9
Scoobyrs25 Member Join Date: Mar 2012 Drives: 01 RS, STI V6 RA Limited, BRZ Location: MADHOUSE Orange CA Posts: 23 Thanks: 0 Thanked 5 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	You can have the best of both worlds actually. I removed mine and added a bent piece of aluminum that allowed cold air in and kept the hot radiator air out. Amazing response and now more power throughout the rev band.

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