Stock 3MZ intake question

[K-ESD]

Real simple question

What is the diameter of the stock 3MZ intake?

if anyone could provide me this information, it would be greatly appreciated.

[Sebas007]

You mean the throttle body diameter ???
3MZ stock TB diameter is 3"

Be more specific plz it's not it.

[K-ESD]

sorry, I should have been more specific.

To make a long story short. This is mine:
http://www.youtube.com/watch?v=FpNvPaPBpRA

I'm having some misfiring issues and I believe it's due to the fact that I am using a Matrix intake, which could be a different diameter than the 3MZ stock intake. If this is the case, it's throwing off the MAF reading and quite possibly causing this problem.

I'd like to know the diameter of the MAF tube so I can verify if my intake is too large or too small.


Thanks in advance

[Sebas007]

Ok good I'll do it when I'll back home...I've my stock intake in a box somehwere near my kitchen.

I'm eating it ! (haha Canadian French expression translate word to word ! )


EDIT : It is 3" inner diameter like the throttle body

[K-ESD]

want to sell it to me?

Mange pas ton intake, tu va te rendre malade.


Et aussi, Merci d'avoir verifier pour moi

[---CAMRAZY---]

K-ESD, nice to see you here.

Quick Question, Why should the intake make a difference (as far as mis-firing) there are many guys here running a bigger one from CP-e, and Sebas is running an extension?

Also, the MAF is the same for the matrix... So what made you come to the conclusion that it may be the intake? or are you just trying to rule it out?

I got your message on youtube, Thanks for offering to help, I am going to hold you to that.

Ok good I'll do it when I'll back home...I've my stock intake in a box somehwere near my kitchen.

I'm eating it ! (haha Canadian French expression translate word to word ! )


EDIT : It is 3" inner diameter like the throttle body

Good old Sebas, saving the day!

[Sebas007]

want to sell it to me?

Mange pas ton intake, tu va te rendre malade.


Et aussi, Merci d'avoir verifier pour moi

Comment ça tu as pu ça ?? Je penses que c'est toi qui l'a bouffé !! haha

[K-ESD]

K-ESD, nice to see you here.

Quick Question, Why should the intake make a difference (as far as mis-firing) there are many guys here running a bigger one from CP-e, and Sebas is running an extension?

Also, the MAF is the same for the matrix... So what made you come to the conclusion that it may be the intake? or are you just trying to rule it out?

I got your message on youtube, Thanks for offering to help, I am going to hold you to that.

Ok good I'll do it when I'll back home...I've my stock intake in a box somehwere near my kitchen.

I'm eating it ! (haha Canadian French expression translate word to word ! )


EDIT : It is 3" inner diameter like the throttle body

Good old Sebas, saving the day!

Ah, we live in such a small world, lol <--- Got that right

As far as I understand, if the pipe was smaller, the air velocity would increase and fool the MAF into thinking it's getting alot more air than it really is.

The 3.5" CP-e is an exception due to it's tuning capability.

Misfires are caused mainly by vacuum leaks, low fuel pressure or ignition related stuff, but I have a feeling that if my MAF is outta wack because of intake air velocity, this might cause a problem. Considering how sensitive the whole ECU processing is.

The engine runs fine in limp mode... fine for limp mode that is. So i'm assuming my coils /injectors/fuel pressure are all fine.

My OBD2 is throwing code 0300 (random misfire) and 0171 0174 (system too lean)

Are you sure the Matrix has the exact same MAF? I got two identical ones (from the top side) here. One of them is visibly different at the "stem".
The only way to know is by part numbers, I haven't verified that yet tho...

Any thoughts on that?

[K-ESD]

want to sell it to me?

Mange pas ton intake, tu va te rendre malade.


Et aussi, Merci d'avoir verifier pour moi

Comment ça tu as pu ça ?? Je penses que c'est toi qui l'a bouffé !! haha

Je l'ai jamais eu. J'ai meme pas une Solara !

J'ai une Celica 6em gen avec un beau gros 3MZFE. yum yum, j'va manger ca !

[---CAMRAZY---]

Are you sure the Matrix has the exact same MAF? I got two identical ones (from the top side) here. One of them is visibly different at the "stem".
The only way to know is by part numbers, I haven't verified that yet tho...

Any thoughts on that?

Yeah, I verified the part number through My person at toyota.

1994 coupe de camry 3MZ, est si sexy ! ! Une fois il court cela est...

There, I don't feel left out. HAha

[K-ESD]

what is the part number, just to double check mine.

This is what I based my assumption of intake incompatibility.

MAF Sensor
The Mass Air Flow Sensor doesn't actually measure Air Flow. It's actually measuring air velocity. Say we have a pipe that has a one square foot cross section. If you know that the air in it is traveling at one foot per second, then you know the flow rate it 1 cubic foot of air per second. The MAF sensor is just a heated wire that reports the speed of the air in the tube. It sends out a certain range of voltages. Higher speed air causes a higher voltage. The ECU for the Solara is "tuned in" to the sensor and knows that 5 volts means some particular amount of air. Since the MAF only knows the speed of the air, the ECU calculates based on the assumption that the stock intake is used. The stock intake has a certain cross section so it knows a 5V signal means X feet per second, times the corss section of the stock intake = Mass Flow Rate of air going into the throttle body .

from http://www.solaraguy.org/viewtopic.php?p=186107#186108

I'm gonna take a drive to my garage to measure the Matrix intake, I'll get back soon.

[---CAMRAZY---]

what is the part number, just to double check mine.

This is what I based my assumption of intake incompatibility.

MAF Sensor
The Mass Air Flow Sensor doesn't actually measure Air Flow. It's actually measuring air velocity. Say we have a pipe that has a one square foot cross section. If you know that the air in it is traveling at one foot per second, then you know the flow rate it 1 cubic foot of air per second. The MAF sensor is just a heated wire that reports the speed of the air in the tube. It sends out a certain range of voltages. Higher speed air causes a higher voltage. The ECU for the Solara is "tuned in" to the sensor and knows that 5 volts means some particular amount of air. Since the MAF only knows the speed of the air, the ECU calculates based on the assumption that the stock intake is used. The stock intake has a certain cross section so it knows a 5V signal means X feet per second, times the corss section of the stock intake = Mass Flow Rate of air going into the throttle body .

from http://www.solaraguy.org/viewtopic.php?p=186107#186108

I'm gonna take a drive to my garage to measure the Matrix intake, I'll get back soon.

Well hopefully you get it running proper.


22204-0D030 is the part number.

This is the older number, 22204-22010, same part.... And A lot of toyotas, lexus, and even the elise use it....

[Sebas007]

want to sell it to me?

Mange pas ton intake, tu va te rendre malade.


Et aussi, Merci d'avoir verifier pour moi

Comment ça tu as pu ça ?? Je penses que c'est toi qui l'a bouffé !! haha

Je l'ai jamais eu. J'ai meme pas une Solara !

J'ai une Celica 6em gen avec un beau gros 3MZFE. yum yum, j'va manger ca !

Me semblait aussi !! Nice setup man !!

Quel tranny tu as avec ca ??

[K-ESD]

ohhhh yes !

I think it is indeed the problem. The intake pipe diameter is 2.5"

[K-ESD]

want to sell it to me?

Mange pas ton intake, tu va te rendre malade.


Et aussi, Merci d'avoir verifier pour moi

Comment ça tu as pu ça ?? Je penses que c'est toi qui l'a bouffé !! haha

Je l'ai jamais eu. J'ai meme pas une Solara !

J'ai une Celica 6em gen avec un beau gros 3MZFE. yum yum, j'va manger ca !

Me semblait aussi !! Nice setup man !!

Quel tranny tu as avec ca ??

J'ai mis une E-153 d'une 01 Solara. Sta transmission la ROCK !