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isaac
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isaac Jul 16, 2:12am - #18933 
2001 Absolutely Red Toyota Celica GT
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Intake Butterfly - How To Remove

Intake Butterfly Removal
By John Unnever

Step 1. Undo the 3 clips to the top of the airbox.
Linked Image

Step 2. Undo the 2 hoses connected to the top half of the airbox.
Linked Image

Step 3. Undo the main hose coming from the throttle body. Now pull the top of the airbox off. You will have to kind of push back towards the motor to get it out of its groove
Linked Image

Step 4. Unplug the hose connected to the butterfly and remove the filter. Now you can lift the butterfly valve up
Linked Image

Step 5. Cap off the hose that was connected to the butterfly. I used a screw but you can use anything you think will work. Now put everything back together and you're done!
Linked Image

Source...
http://www.celica.net/techarticle1.asp

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Anonymous Jul 23, 3:40pm - #18934 
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I'm really new to the celica world, having just bought my 02 celica GT, and fairly new to the inner workings of cars in general. My question is, why would you want to take the Intake butterfly off, is this to do further work on the car, or does taking it off itself do some sort of improvement. Thanks.
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Steven
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Steven Jul 23, 9:26pm - #18935 
2001 Spectra Blue Mica Toyota Celica GTS
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its just a simple modification you can do to add a slightly deeper sound to your cars air Intake box. There is no Real noticable changes in HP though.
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Steven
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Steven Aug 6, 8:37pm - #18936 
2001 Spectra Blue Mica Toyota Celica GTS
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i heard it dampens the noise coming from the stock Intake box
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isaac
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isaac Aug 15, 8:51pm - #18937 
2001 Absolutely Red Toyota Celica GT
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The "butterfly is a plastic part located inside the air box that is recognizable by the small white flap in the middle. This is a very minor modification which has not shown any significant power gains but results in a deeper sound when accelerating it was placed there by Toyota to help MPG by reducing the amount of air that enters the engine & to keep the car a little quieter at RPMs below 3500.

Positives: Deeper Sound, Little Bit Better Acceleration
Negatives: Possible Harder To Start Car

Some Dyno Runs...

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celicatalk
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celicatalk Sep 12, 3:05am - #18938 
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Indiana, PA
I was told that removing the Butterfly Valve is not really good, as you will get less power down low, like most CAIs. The butterfly valve was put there to have better low end power. Is this true???

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Anonymous Nov 7, 9:33pm - #18939 
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I just took out the butterfly. Under 3000 rpm I didn't notice any change, but at 3000 an up, the Intake sound is much nore deeper. Is that the "normal reaction" or did I something wrong.
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Jason Boyd
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Jason Boyd Dec 2, 5:09pm - #18940 
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I took the Intake Butterfly Valve out of my Celica and a few weeks later the Check Engine light came on. I put the Butterfly Valve back in and took it to the shop. They said that according to the computer, a hose had been disconnected. Am I correct in assuming that the computer tested the hose that was capped off and recognized that there was no valve at the end of it?

[ 12-02-2002, 09:10 AM: Message edited by: Jason Boyd ]
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aguilar
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aguilar Mar 29, 9:57am - #18942 
2002 Black Toyota Celica
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If you put a k&n Air Filter, you take this whole box out anyways right?

[Linked Image]
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isaac
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isaac Mar 29, 10:12pm - #18943 
2001 Absolutely Red Toyota Celica GT
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Originally Posted by aguilar
If you put a k&n air filter, you take this whole box out anyways right?


K&N Air Filter is just a replacement for your stock Air Filter.

In the picture below, the white thing is the the Air Filter.

TRD and K&N air filters are the exact same thing except with a high quality filter and mesh, not paper. grin

This is the stock Toyota Air Filter, installed in your stock air box:

Linked Image


This is the TRD Performance Air Filter:
https://www.celicahobby.com/reviews/performance/p124-trd-high-flow-air-filter.html

Linked Image

Linked Image

[Linked Image]
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7th_gen_celica
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7th_gen_celica Apr 22, 12:07am - #18944 
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Just took out the valve. Great sound! (not as good as a CAI, but nice). My shift from 2nd -> 3rd gives a nice deep sound.

Thanks. These instructions were great

Yellow '02 GT.
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Rone0seveN
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Rone0seveN Apr 22, 4:12am - #18945 

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Hey guys I did everything you guys told me to do
and after I plug the hose up my friend told me to take out the whole fricken butterfly part out just that small portion though,and now lots of more space for more air to come in it's awesome deeper sound and runs better. thumbsup
confused One question though is it bad if i take the whole small portion of the butterfly part out?

Stock is the BEST!! J/K
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hotwheels85
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hotwheels85 Aug 23, 11:51pm - #18946 

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alright i am new to engine work and all of that.. i attempted to remove the butterfly valve from my 03 celica GT and im not sure that i did it right. I removed the Air Filter then i capped off the valve connected to the butterfly but then i wasnt sure what i was to do next? Your pictures didnt really get into enough detail as to what exactly you meant by "removing the butterfly valve". Like i said i am new to engine work and if i have made a mistake could you please tell me what exactly to do? Also, by doing what i did, plugging the valve, and not removing the butter fly, is it safe to drive? Please help!

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isaac
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isaac Aug 24, 7:51am - #18947 
2001 Absolutely Red Toyota Celica GT
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Directions to the butterfly...

Linked Image

Linked Image

Linked Image

Linked Image

[Linked Image]
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hotwheels85
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hotwheels85 Aug 24, 9:31pm - #18948 

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alright i got back under my Hood and i removed not only the white thing, but the whole housing for the white thing
is that wrong or bad? Should i have left the housing in and removed the white thing? AHHH HELP AGAIN lol i am a newbie frown

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MiDNiGhT_bLuE
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MiDNiGhT_bLuE Nov 6, 4:41pm - #18949 
2000 Carbon Blue Toyota Celica
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Originally Posted by hotwheels85
alright i got back under my Hood and i removed not only the white thing, but the whole housing for the white thing
is that wrong or bad? Should i have left the housing in and removed the white thing? AHHH HELP AGAIN lol i am a newbie frown

yes in step 4 it tells you to remove the whole housing which is the whole point of the mod. to get more air through..
i removed my fly this morning, took me about 20mins. the sound is awesome! i love how my celi sounds now. i also noticed when i start the car, the needless jump like crazy from 0 to 60 or so! but fell then right after. i dono if this is normal. well it was a cold day today and after a good run around the block, i noticed after turning of the car that how air came out of the front of the grille where the toyo badget is! wow looked awesome..
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sbocaj55
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sbocaj55 Sep 19, 9:10pm - #18950 

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So will this 'mod' make my CEL come on?
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Angus
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Angus Oct 24, 1:30pm - #18951 
2004 Black Toyota Celica ZR
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Thanks for the guide and the photos. It took me just a few minutes.

Am I correct to think that the butterfly stays in place?

None of the steps seem to instruct on how to actually remove the butterly from the air Intake and when I looked at it - it seemed rather firmly mounted in there.

By the way - for sealing the end of the hose I found a 4mm "repair plug" for garden sprinkler hoses fitted just perfect.
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iheartmycelica00
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iheartmycelica00 Dec 3, 2:51am - #18952 
2000 white Toyota Celica
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hey, i am tryin to decide whether to take out this air box thing and i was wonderin b4 i do it, how much does it hurt the mileage, cause i dont feel like payin any more 4 premium
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iheartmycelica00
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iheartmycelica00 Dec 3, 3:00am - #18953 
2000 white Toyota Celica
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and by the way, wat is the mass air flow sensor for ne way and wat do those hoses lead to and wat is their purpose
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Zero
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Zero Mar 7, 1:50am - #18954 

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I did this mod in mid Feb. the sound is awesome - its more louder than most of my friend's CAIs (Injen and AEM). I've felt it gave a better acceleration to the Celica because there is more room for air to be sucked in.

great guide. thumbsup


also, i havent received any CELs and never had a hard time starting her up thumbsup

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CelicaVVTi
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CelicaVVTi Mar 30, 4:26pm - #18955 
2004 SILVER Toyota Celica GT
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I have removed this whole piece. Is it correct?.
I circulate with my car without this piece because I have eliminated it and I have not placed it again.Is it correct?.
Am I able to have some problem?
1953547614-valvula01.jpg
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Zero
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Zero Mar 30, 4:29pm - #18956 

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^^^yes, that is the correct piece to remove. did you remember to plug up the hose that was connected to it?

I've mastered the art of the After Image Technique.
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CelicaVVTi
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CelicaVVTi Mar 30, 4:34pm - #18957 
2004 SILVER Toyota Celica GT
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Do you refer to the wire or tube?.
I will cover the exit of the tube with a screw or something similar.
Is it correct all?.
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Zero
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Zero Mar 31, 2:14am - #18958 

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the tube. yes, a screw is all you need thumbsup GL and have fun. cool

I've mastered the art of the After Image Technique.
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CelicaVVTi
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CelicaVVTi Apr 1, 2:19pm - #18959 
2004 SILVER Toyota Celica GT
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Ok, thank!!.
Yesterday, I have gone to toyota and they have told me that there is a valve that if you eliminate it it provides more hp. This valve castrates the car to control the contamination but I dont know which it is.
Does somebody know which this valve is?
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sezniko
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sezniko Apr 2, 10:28pm - #18960 

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I got my rims and felt a difference in my speed,then after removing the butterfly my celi sounds deeper and rides better.

As long as you do everything right no one will know you did anything at all
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Creep1234
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Creep1234 Apr 12, 6:42am - #18961 

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yeah i just did this mod whoa hoo!

i'm still a noob!

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drive sideways.
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Celicaobsession
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Celicaobsession Jul 27, 8:42am - #450159 
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Honestly I wasn't so amazed. The sound change was barely noticeable to me and there were no gains in power. But it was fun to take out and it was easy to put back in so why NOT try it?
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