I was just thinking...since I'm adding a 65mm TB to the car... what mm is the MAF?

I would go measure it, but the car is at the exhaust shop right now! Will not get back for a few days... and I was just wondering if anyone knew!

Wondering if its opening was going to restrict me? As well as its ability to read with the 65mm tb!

Oh car is 1987...has 3.4, but still using stock MAF with the screen removed!

 

Stock throttle bodies and mass air flow sensors are good up to around 400 horsepower....If your not making that,your wasting money.

 

Stock throttle body is good up to 400 horsepower?? Wow, here'd you hear that? My motor isn't 400 hp and was choking with the stock throttle body.

 

Hey, does removing the screen do anything? More flow/less restriction?

 

Topic of much debate. One of those free mods... Alot have said they had had probs when they have removed theirs...said the screen helps iron out tubulant air flow. Me, I have had no probs with turbulance or MAF going bad...so who knows really.

Personally I would think if the car is moded enough the screen would be a slight air restriction, so removing it would help a bit!

 

hehe ok, thanks for the info. I'll consider those factors

 

Not with our tiny TB/MAF

 

Like RedR said, my GM book says the screen is there to smooth out airflow over the sensor- the sensor being the orange frequency film right in the middle of the circuit board in the tube.

If you have a bend right before the MAF (such as the Firebirds and the 90-92 Camaros), you should leave the screen in - as far as my test showed. I was able to remove my screen in one piece- and since I have the bend right before the MAF, I immediately threw a service engine soon code, #32, for low airflow. I think because of the curve, air was being sucked to the side of the tube instead of over the center of the tube.

But if you've got an 85-89 Camaro with the "straight ahead" intake design, you should be OK- the computer will probably act as normal (you won't throw a code).

So if you can remove your screen in one piece, try it, let us know how it goes- but if the screen might crack into pieces when you remove it- you might not wanna do it because you can't "go back" unless you get a junkyard MAF.


Diameter is either 2.5 or 2", I forget. I think it's 2.5.

 

Well that would explain why I never had a prob! I removed the bend when I removed the screen!

 

Not sure about the differences in years and firebid/camaro, but my MAF for my 2.8 is 3" I.D., which would make it about 76 mm.

 

Haha, wow, I wasn't even close! Thanks for the correction!

 

No problem TomP, wasn't really trying to correct because I'm not sure what other years or different engines have. I just know what mine is because I had to measure everything when I made my cold air intake.

I actually thought about getting another MAF sensor and trying to mount the internals in a straight pipe for a cleaner looking fabrication, but decided to just paint mine instead. It was a real bear to get hooked up because it is 3" inside, but about 3-5/16" outside, and I had to stretch a 3" rubber coupling around it! Turned out very nicely, though. (Sorry, kinda sliding off topic there...)