Porting out MAF

mustanggt3685

New Member
Oct 8, 2005
130
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Illinois
Hey guys,

I am having one of those bored ass weekends here at school and I was contemplating porting out my MAF. I have read a few tech articles on it, but am unsure if this is worth it or not. The damn MAF is kind of expensive and I do not want to ruin it. Is it worth the time or not?
 
i get the basic idea behind porting the maf but i cant see the real benefit here. seems to me you would get better return on the pipe/tb/intake than from porting the maf. but the is all bs and contemplation from me as i have no experience with either. 2cents
 
I've read that by porting an aluminum MAF meter, you create a bit of a lean condition, especially in higher rpms. For a n/a application, that is more ideal for more efficient combustion, but at the same time, if you don't know what you're doing, you can really damage something.
 
How do you plan on changing the EEC tables for the unmetered air once you port it? Are you going to get a dyno tune? It won't do you any good to port it, so you might as well just buy a new one which may do you good down the road when you have the mods to support needing a bigger MAF.
 
The MAF is a calibrated unit. The sample tube port and the main port are sized in a specific ratio to monitor airflow.

If you port the MAF without porting the samply tube port you will increase airflow without the EEC seeing it. You will lean the car out. Since there is no way to accurately determine how much of the samply tube port needs to be ported to keep in ratio with the main port, it's best to leave it alone