Can you take your MAF somewhere and have it tested? I'm not talking about tapping the MAF during idle.

Also, is there an upgrade, or has anyone ever tried a MAF upgrade to a larger size?

Jason

 

V8 MAF's won't fit- I know, I own 2 of them along with an entire TPI intake and harness.

 

Go to http://www.sunpro.com , click on the garage sale link, click on test and tune, and buy their sensor testor for cheap; it tests MAF sensors.

Either that or any shop with a computer can show what the MAF is reading.

What's wrong with your MAF?

 

Nothing's wrong with the MAF. I was just curious for future reference. Thanks Tom.

 

no you guys can't upgrade them

 

Like hell I can't. You wanna say that to my face? Just kidding.

The reason I asked is because I found this website selling MAFs for trucks (I think GM trucks) that were upgrades from stock (larger of course).

I was thinking if you're loaded, you can pull apart the one for our car and mount it in a larger tube.

 

you'd have to be VERY VERY carful to swap the guts of a MAF into another tube, can it be done? yes...is it worth it? eh...debatable

 

is it worth it? how about 'no'?

the maf/ecu are calibrated to that size tube. Increase the tube, the ecu will interpret the maf's signal wrong.

You'd need major reprogramming.

 

I'm not disagreeing with you Doward, but I can't see why it would matter what the size of the tube is, unless the board inside needs to be in a certain proportion to the size of the tube.

 

Actually, it's the flow of air through the tube that's important.

it's 5:30 am, so I'm not really up to the math part of it, but in a nutshell -

Smaller pipe = higher velocity for the same flow
Bigger pipe = lower velocity for the same amount of flow

WIth a bigger pipe, the MAF reads it as a slower velocity (the air flow) and hence, the ecu reads it as less air.

The key would be to go from a 3" to whatever size flows exactly half the velocity for a given air mass (or double the air mass at a given velocity) and then recalibrate the ecu accordingly. But as far as I know, the MAF scalar tables are still a huge item of mystery....

 

Doward is 100% right. I forgot all about that.

 

Well, I guess it would have helped if I knew how the MAF worked. Now that you tell me it works on velocity it makes sense. I should have known it had something to do with Bernoulli's Principle.