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Mass Air Sensors?

dualscoopinchevy

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dualscoopinchevy Enthusiast

dualscoopinchevy

Posted
Posted

anybody put an aftermarket mass airflow sensor in? I took a look at mine the other day for the first time. is the only difference that a performance one doesnt have the mesh screen?

omegafiler Senior Enthusiast

omegafiler

Posted
Posted
anybody put an aftermarket mass airflow sensor in? I took a look at mine the other day for the first time. is the only difference that a performance one doesnt have the mesh screen?

 

Not unless its a larger diameter along with a CAI setup to take advantage of a bigger MAF. But I would suspect you'd need some good supporting mods to justify replacing your factory MAF.

 

Also, if you really wanted to, you can remove the screen from your factory MAF. I believe it's primarily here to even out the air flow to your MAF sensor so it gets a better reading. However, I don't think you'd see any significant gains by doing this either.

2500HD 8.1 Enthusiast

2500HD 8.1

Posted
Posted

I pulled out the screen on mine. The Granatelli sensors are not any bigger diameter, but they claim to be recalibrated? For $350? No problems without the screen on my stock one. I can't really say I noticed a big difference, but the screen is definetley restricting airflow.

AFD256 Enthusiast

AFD256

Posted
Posted

About 2 years ago I had the granatelli and it made my truck go crazy, so I took it out and replaced the stock back in. Also took the screen off with no problems Can't really tell the difference.

  • 2 weeks later...
Erik F Enthusiast

Erik F

Posted
Posted

Wouldn't you need to reprogram the ecu if you are going to change the size of the maf? I would guess that the sensors are designed to work within a set volume of air...if you change the pipe size you are changing the volume of air that is around the sensors...the sensors would have no way of knowing how much or little air is passing. Changing the maf could cause the engine to run lean or rich.

2500HD 8.1 Enthusiast

2500HD 8.1

Posted
Posted

The Granatelli sensors are not any larger in diameter than stock. They dont have screens, but supposedly they are programmed different. I think its a scam. The ECM should automatically adjust over time for increased airflow.

redvett Senior Enthusiast

redvett

Posted
Posted

The GMT800 AMFS will support a 8.1 L engine so unless you have a big cam lots of head work its just a waste of money. The 01 to 04 ZO6 used the very same MAFS and made 405 hp.

Sly Enthusiast

Sly

Posted
Posted
The GMT800 AMFS will support a 8.1 L engine so unless you have a big cam lots of head work its just a waste of money. The 01 to 04 ZO6 used the very same MAFS and made 405 hp.

 

Wasn't the ZO6 MAF descreened?

chakis24 Senior Enthusiast

chakis24

Posted
Posted
Not unless its a larger diameter along with a CAI setup to take advantage of a bigger MAF. But I would suspect you'd need some good supporting mods to justify replacing your factory MAF.

 

Also, if you really wanted to, you can remove the screen from your factory MAF. I believe it's primarily here to even out the air flow to your MAF sensor so it gets a better reading. However, I don't think you'd see any significant gains by doing this either.

 

 

so what about after i put in the ram air setup i plan on doing in the future, would it then be worth it? or would getting a tune cancel the need for a new MAF?

redvett Senior Enthusiast

redvett

Posted
Posted
The GMT800 AMFS will support a 8.1 L engine so unless you have a big cam lots of head work its just a waste of money. The 01 to 04 ZO6 used the very same MAFS and made 405 hp.

 

Wasn't the ZO6 MAF descreened?

 

 

The 04 ZO6 was descreened.

2500HD 8.1 Enthusiast

2500HD 8.1

Posted
Posted

Be careful because I ordered a Predator and Granatelli sensor for Summit for my 03 Suburban, but I got bad codes. Don't remember which ones now, but Granatelli said that their sensor was not compatible with tuners because they both change the timing. I did use the sensor and Hypertech before on my 01 with no problems.

  • 2 weeks later...

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