Ported My MAF (Pics)
#1
Ported My MAF (Pics)
Well I got to thinking and thought, i wonder if that screen thing on the MAF would really stop anything, I mean, if the air filter can't stop it, would that screen? I didn't think so, so I went to the library and found a book that was telling me about the MAF and it said by taking out the fins and screen in the MAF you can flow up to 182 CFM. I don't know about anyone else but I didn't want to spend $400 for a "high flow" MAF sensor. I also read that the fins main purpose was to slow down the in coming air to cool it so the MAF won't malfunction. I don't know if that's true but what ever. So I went to the store, bought a dremel tool, then started to port. Here's a step by step of what I did along with some pictures I took while doing it.
1) Took the MAF out then seperated the two sides.
2) Then took a hack saw and sawed off the majority of the fins as you can see in the second picture.
3) Got a nice sharp and big toothed drill bit type thing that took the other majority of the left over metal away.
4) Then took the dremel tool and grinded it down a little smoother after using the huge, chunk eating drill bit.
5) Used a sander on the somewhat rough surface that was left
6) Used a small wire wheel also on the dremel on the whole thing
7) Took a small buffer with the dremel to shine it up
8) Put it back together
That was about it. It took me a little over 2 hours to do. I definitely noticed a faster throttle response, but as for power, I don't know because i can't drive it. My car won't shift out of first. Yes I do know some people will not like this but think of it this way, it's not your car. Last but not least here are the pictures. Enjoy!
Starting point
First side cut
First side done and smoothed
Both done and smoothed out
Close up, left side
Close up, right side
Complete pic 1
Complete pic 2
ShibbyZ
1) Took the MAF out then seperated the two sides.
2) Then took a hack saw and sawed off the majority of the fins as you can see in the second picture.
3) Got a nice sharp and big toothed drill bit type thing that took the other majority of the left over metal away.
4) Then took the dremel tool and grinded it down a little smoother after using the huge, chunk eating drill bit.
5) Used a sander on the somewhat rough surface that was left
6) Used a small wire wheel also on the dremel on the whole thing
7) Took a small buffer with the dremel to shine it up
8) Put it back together
That was about it. It took me a little over 2 hours to do. I definitely noticed a faster throttle response, but as for power, I don't know because i can't drive it. My car won't shift out of first. Yes I do know some people will not like this but think of it this way, it's not your car. Last but not least here are the pictures. Enjoy!
Starting point
First side cut
First side done and smoothed
Both done and smoothed out
Close up, left side
Close up, right side
Complete pic 1
Complete pic 2
ShibbyZ
Last edited by MyShibbyZ28; 07-15-2005 at 06:54 PM.
#2
Re: Ported My MAF (Pics)
Originally Posted by MyShibbyZ28
Well I got to thinking and thought, i wonder if that screen thing on the MAF would really stop anything, I mean, if the air filter can't stop it, would that screen? I didn't think so, ...
#7
Re: Ported My MAF (Pics)
Originally Posted by Jameslt1TA
Congradulations you just made you car extremely hard for someone to tune.
#9
Re: Ported My MAF (Pics)
I is calibrated based on it's original crossection and housing, as soon as you grind on it atall you completely destroy that calibration. You may see a temporary power gain because the engine will be ingesting more air than the MAF is reporting, over time the PCM will be able to see this as lean O2 values and will compensate.
Your stock MAF was FAR from a restriction and you will find the vast majority of knowledgable folks here will avoid aftermarket MAFs like the plague. You needed to spend a fraction the time you spent doing this researching it first and you would not have ruined a $125+ sensor.
Your stock MAF was FAR from a restriction and you will find the vast majority of knowledgable folks here will avoid aftermarket MAFs like the plague. You needed to spend a fraction the time you spent doing this researching it first and you would not have ruined a $125+ sensor.
#10
Re: Ported My MAF (Pics)
MyShibbyZ28 I must say that this is a good post. Good pictures, and looks like good work-- Well documented procedure. I am no expert about the MAF so I can't (and won't) disagree, or speculate about the content of your post.
#11
Re: Ported My MAF (Pics)
Originally Posted by CreatiVe2
Why is that, the MAF would still be seeing the same Volume/Temp coming in...
#12
Re: Ported My MAF (Pics)
Originally Posted by CreatiVe2
Why is that, the MAF would still be seeing the same Volume/Temp coming in...
#13
Re: Ported My MAF (Pics)
ok ok you got me.. Increased.... Volume fell better now...
and Shibby, if your worried about the MAF altering a/f Ratio with the stock tune check out e-bay
http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW
10$
and Shibby, if your worried about the MAF altering a/f Ratio with the stock tune check out e-bay
http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW
10$
#14
Re: Ported My MAF (Pics)
Originally Posted by matt65
MyShibbyZ28 I must say that this is a good post. Good pictures, and looks like good work-- Well documented procedure. I am no expert about the MAF so I can't (and won't) disagree, or speculate about the content of your post.