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Joined: Apr 2005
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MUNTED
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MUNTED Apr 4, 3:12pm - #434544 

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2005 Toyota Celica SX

Joined: Apr 2005
Posts: 124
australia
removing the intake butterfly improves intake sound, performence

hey all i have heard that removing the Intake butterfly improves sound and performance any help??? and downsides to it? and could someone tell me how to do it as well??? thx all

"girls like it when you have a six pack but not after you have finished one"
Joined: Apr 2005
Posts: 78
05XRunner
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05XRunner Apr 4, 3:26pm - #434545 

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2005 Toyota Tacoma XRunner

Joined: Apr 2005
Posts: 78
Pittsburgh PA
Do you mean the butterfly plate in the throttle body...HAHAHAHAHAHA
if you did that your car would be at WOT at all times and would not run...i dont own a celica so I dont know if there is anything else that is referred to as a butterfly in airbox
Joined: Jun 2004
Posts: 3,748
hombredelassrtas
CF Connoisseur
hombredelassrtas Apr 4, 3:31pm - #434546 

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2004 Toyota Celica

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Posts: 3,748
Gainesville, FL
here is the uninstall:
https://www.celicahobby.com/ubbthreads/thread.f_57307_0_collapsed_2__1.html

I did it before my Intake. It was a tad louder. Power i didnt feel any. Now there is a dyno on the other site showing a .2 hp increase i bleive rofl

But if your not getitng an Intake any time soon i woudl do it jsut for the bit of better sound smile

Here is the dyno:
1953555700-dyon.JPG

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Polykarb
Metal Storm 2040
Polykarb Apr 4, 3:41pm - #434547 

Metal Storm 2040
2000 Toyota Celica

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Posts: 1,696
Tampa, Florida
yeah you get like 1 torque, thats it.

FF TWINCAM BEAUTY: CELICA
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hombredelassrtas
CF Connoisseur
hombredelassrtas Apr 4, 6:24pm - #434548 

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2004 Toyota Celica

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Gainesville, FL
hey .2 hp is more then enough rofl

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sekytwo
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sekytwo Apr 4, 6:40pm - #434549 

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2001 Toyota Celica GT

Joined: Oct 2004
Posts: 212
Salt Lake City, Utah
.2 rofl thats great, i gotta do this to my Intake right now!!( sarcasim)
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Eman
Black Sheep
Eman Apr 4, 6:50pm - #434550 

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2000 Toyota Celica GT

Joined: Aug 2002
Posts: 1,096
818, CA
potato in the exhaust, alota back presssure = more hp thumbsup grin

Ima TuRD fa life
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GTS2003BLK
Senior Member
GTS2003BLK Apr 4, 7:38pm - #434551 

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2003 Toyota Celica

Joined: Dec 2003
Posts: 487
Portland, Oregon
Project Celica: Part 2
The Dawn of Celica Tuning

http://www.sportcompactcarweb.com/projectcars/0010scc_projcelica/

"Last month we tried removing the flap door assembly and thought we felt a significant improvement in both power and drivability, but subsequently found no power on the dyno. We then tried swapping the flap door in and out without telling the driver and found that nobody could really tell the difference. Our conclusion? Taking out the flap door doesn't hurt, and may or may not improve drivability."

Here are parts 1 and 3 of the article series:

http://www.sportcompactcarweb.com/projectcars/0009scc_projcelica/

http://www.sportcompactcarweb.com/projectcars/0106scc_projcelica/

Several people on this site have reported problems with stalling after sudden stops as a result of removing the butterfly valve assembly.

It's purpose is to act as a kind of choke to help the engine idle better when starting, particularly when it is cold outside.

A small controlled amount of air constriction at low RPMs is actually better for low end torque.

It's one of those mods that dose very little if anything for performance and actually has the potential to compromise over all reliability of the car. Really not worth it in my opinion.
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hombredelassrtas
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hombredelassrtas Apr 4, 7:57pm - #434552 

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2004 Toyota Celica

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Gainesville, FL
yea it is essentiually a choke for when its cold. but here in florida its never cold wink its a good little steppingstone mod between stock and CAI wink Pair this with a K&N filter you may boost that up to a .3 difference+ filter smile

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MUNTED Apr 5, 1:38pm - #434553 

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2005 Toyota Celica SX

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Posts: 124
australia
.3!!!!! wow i can now do a 7 sec 1/4 mile!!! (safcasim) lol rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl rofl rofl:rotf: rofl rofl

"girls like it when you have a six pack but not after you have finished one"
Joined: Apr 2005
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MUNTED Apr 5, 1:40pm - #434554 

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2005 Toyota Celica SX

Joined: Apr 2005
Posts: 124
australia
looks gay lol rofl

"girls like it when you have a six pack but not after you have finished one"
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Posts: 3,748
hombredelassrtas
CF Connoisseur
hombredelassrtas Apr 5, 2:28pm - #434555 

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2004 Toyota Celica

Joined: Jun 2004
Posts: 3,748
Gainesville, FL
lol

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Haulin_A_Doo
Specialist
Haulin_A_Doo Apr 6, 11:58am - #434556 
Specialist

Joined: Jul 2004
Posts: 2,016
Ontario
It doesn't add anything, but it sure sounds cool. I posted a vid of the butterfly mod, but I haven't got time to search for it.
Joined: Apr 2005
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MUNTED
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MUNTED Apr 6, 4:35pm - #434557 

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2005 Toyota Celica SX

Joined: Apr 2005
Posts: 124
australia
WELL GREAT HELP!!! LOL rofl

"girls like it when you have a six pack but not after you have finished one"
Joined: Jan 2005
Posts: 51
Carbonblue2005GT
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Carbonblue2005GT Apr 7, 6:21am - #434558 

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2005 Toyota Celica GT

Joined: Jan 2005
Posts: 51
Walnut Creek, CA
I removed the butterfly valve for some time, but put it back again as I did not like the cars behavior (I want power at lower RPM). My experience on a 2005 GT is as follows:

1) Removing the valve will cause a deeper sound
2) It will possibly cause loss of power at lower RPM (that is what I noticed)
3) but will possibly give a slight gain at higher RPM
4) Car got a little harder to start.

Basically, the butterfly valve works as a tuned Intake runner - see
http://auto.howstuffworks.com/question517.htm
for more information.

*** Wars cannot be won, only survived ***
Joined: Apr 2005
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MUNTED
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MUNTED Apr 7, 2:56pm - #434559 

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2005 Toyota Celica SX

Joined: Apr 2005
Posts: 124
australia
well fuck i have auto so low rpm is needed ohh well ile just wait till i get a CAI or SRI

"girls like it when you have a six pack but not after you have finished one"
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Chelica815
Specialist
Chelica815 Apr 7, 5:38pm - #434560 
2000 Silver Toyota Celica
Specialist
2000 Toyota Celica

Joined: Jun 2004
Posts: 1,870
San Francisco -The Bay
I removed mine and I am not getting loss of power at lower rpm. Maybe it is because my low RPM sucks to begin with since I do have a GTS. But the sound is there and lift kicks a bit harder (might be my imagination).

I suggest that you try it out for 1 day or 2 and see if you like it. If you have problems, then put it back on. It is not like you are chopping off tubes and relocating anything. The removal is very easy, just make sure you use a fat enough screw to plug up the hose.

You can do this for a time being until you await for your Intake. You gotta do a bit more work installing a CAI or a SRI anyways so take this as a practice run on messing around with that part of the engine bay.

Agressively Driven
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2000 Celica GT-S 6 Speed
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Carbonblue2005GT
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Carbonblue2005GT Apr 7, 8:01pm - #434561 

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2005 Toyota Celica GT

Joined: Jan 2005
Posts: 51
Walnut Creek, CA
I agree, give it a try, it is an easy mod. I had my valve off for several weeks, then reinstalled it. And I notice that my car gained a tiny bit in the lower RPM. But this was using the butt dyno.

No change in gas mileage, both gave med around 36-38 mpg on highway on my auto.

For me, I will get an AEM CAI later on. Just need to save up some money first... (just bought sway bars...)

*** Wars cannot be won, only survived ***
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