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Intake Butterfly - How To Remove #18999 Jul 15, 9:38pm Jul 15, 9:38pm
Joined: May 2002
Posts: 6,007
Los Angeles, CA
2001 Absolutely Red Toyota Celica GT
isaac OP
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2001 Toyota Celica GT
isaac OP
2001 Absolutely Red Toyota Celica GT
ECelica Admin
2001 Toyota Celica GT

Joined: May 2002
Posts: 6,007
Los Angeles, CA
Intake Butterfly - How To Remove
Taking Out The Butterfly Valve

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1) Ok first thing you need to do when taking out the butterfly valve is to unhook the negative battery terminal. I like to wrap something around the cable so it can't make contact with any metal by mistake!!

2) Unplug the Mass air sensor wiring first that is on the top of the air box towards the Intake tube. See diagram.

3) Pull the large and small vacuum hoses off of top of air box to (see diagram).

4) Slide sensor off of air box that has two vacuum hoses and wiring attached to it. See diagram. (the two hoses and wire can be taken off to leave sensor attached to top section of the airbox also.)

5) Loosen the clamp that is around the Intake hose and attaches to the air box. (Phillips screwdriver) push the Intake tube towards the back of the car to slide tube off.

6) Release clamps from the top of the air box that are shown in the diagram.

7) You should now be able to lift the top of the air box by gently working it off towards the back of the car. (there are groves on the front that it rest in)

8) Take out the Air Filter.

9) Pull off the hose that is attached to the butterfly valve and plug the end of the hose up!

10) Slide the Butterfly valve straight up. It has two clips on the bottom (can be reached by hand under bottom of Intake) that need moved slightly to allow the butterfly to come loose.

11) Place the butterfly hose back in the same slot that it came out of. As to not interfere with other moving parts of the motor.

12) Place Air Filter back in air box.

13) Place top half of air box in proper position. Make sure no wires, hoses, or clamps are stuck in between top and bottom halves. This may take a few moments to slide air box in proper location. Makes sure it is sitting in slots towards the front of the air box before going further.

14) Re-clamp the top of the box, with the three clamps.

15) Reattach large hose and small hose to air box.

16) Slide vacuum sensor with the Hoses and wiring attached to in back into the original slot.

17) Reattach the Intake tube to the air box and refasten hose clamp.

18) Reattach the Mass airflow wiring to the Mass air flow meter.

Re: Intake Butterfly - How To Remove [Re: isaac] #19000 Aug 15, 11:49pm Aug 15, 11:49pm
Joined: Aug 2002
Posts: 92
vvtlr
Member
2000 Toyota Celica
vvtlr
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2000 Toyota Celica

Joined: Aug 2002
Posts: 92
is there a hp increase by taking this out? and is there a dissadvantage when taking this out?


2000 GTS
BOMEX FRONT BUMPER
R2 SIDES (MOLDED-IN)
BUDDYCLUB BACK BUMPER
18" WHITE ADR GT SPORT
Re: Intake Butterfly - How To Remove [Re: vvtlr] #19001 Aug 15, 12:50pm Aug 15, 12:50pm
Joined: May 2002
Posts: 6,007
Los Angeles, CA
2001 Absolutely Red Toyota Celica GT
isaac OP
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2001 Toyota Celica GT
isaac OP
2001 Absolutely Red Toyota Celica GT
ECelica Admin
2001 Toyota Celica GT

Joined: May 2002
Posts: 6,007
Los Angeles, CA
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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Re: Intake Butterfly - How To Remove [Re: isaac] #19002 Sep 8, 5:33pm Sep 8, 5:33pm
Joined: Aug 2002
Posts: 37
overland park, ks
J
Josh Reel
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Josh Reel
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overland park, ks
does the gt also have it...and do you take it out hte same


2003 Toyota Tundra
2000 Jeep Wrangler
Re: Intake Butterfly - How To Remove [Re: Josh Reel] #19003 Sep 8, 8:08pm Sep 8, 8:08pm
Joined: May 2002
Posts: 6,007
Los Angeles, CA
2001 Absolutely Red Toyota Celica GT
isaac OP
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2001 Toyota Celica GT
isaac OP
2001 Absolutely Red Toyota Celica GT
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2001 Toyota Celica GT

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the location is the same on both the GT and the GTS

Re: Intake Butterfly - How To Remove [Re: isaac] #19004 Sep 10, 10:03am Sep 10, 10:03am
Joined: Aug 2002
Posts: 37
overland park, ks
J
Josh Reel
Member
Josh Reel
J
Member

Joined: Aug 2002
Posts: 37
overland park, ks
thanks


2003 Toyota Tundra
2000 Jeep Wrangler
Re: Intake Butterfly - How To Remove [Re: isaac] #19005 Aug 25, 10:28am Aug 25, 10:28am
Joined: Aug 2003
Posts: 36
VA
2003 Silver Toyota Celica
ERIC
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2003 Toyota Celica
ERIC
2003 Silver Toyota Celica
Member
2003 Toyota Celica

Joined: Aug 2003
Posts: 36
VA
will i get less mpg?
how big of a change?
about how long does it take?

thanks for the help

Re: Intake Butterfly - How To Remove [Re: ERIC] #19006 Oct 13, 6:56pm Oct 13, 6:56pm
Joined: Oct 2003
Posts: 2
New York
netrunner
New Member
2000 Toyota Celica GT
netrunner
New Member
2000 Toyota Celica GT

Joined: Oct 2003
Posts: 2
New York
You shouldn't get any less mpg but you should get atleast a 2hp or a lil more gain because your engine will be getting more air with less restriction thumbsup The process took me only 5-10 minutes if that.

Re: Intake Butterfly - How To Remove [Re: isaac] #19007 Apr 2, 2:25pm Apr 2, 2:25pm
Joined: Jul 2004
Posts: 7
Missouri
sezniko
New Member
2001 Toyota Celica
sezniko
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2001 Toyota Celica

Joined: Jul 2004
Posts: 7
Missouri
I removed mine last night.Took me about an hour(I took my time and cleaned the filter box).The only problem I had was takeing out the butterfly valve peice and one of the clips broke,but it won't hurt anything.Thanks for the guide


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