Thread: Help with my air filter

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Originally Posted by Hotrod46

I'm not sure how it would work with the MAF. They can be pretty picky about where they are in the system. I found a honeycomb air flow "straightener" that I was looking at for my build that smooths out the air entering the MAF and lets it work in shorter than optimum installations. The honeycomb stuff is pretty cheap, too.

Could that be the reason mine always seems to hunting or idle up and down a bit? I've put intake gaskets in, swapped intakes, pretty much checked everything and got it a lot better than it was at first but not perfect.I gave up on it.

Originally Posted by 53 Chevy5

Could that be the reason mine always seems to hunting or idle up and down a bit? I've put intake gaskets in, swapped intakes, pretty much checked everything and got it a lot better than it was at first but not perfect.I gave up on it.

That's a definite possibility. I seem to remember reading that the MAF likes about 4 tubing diameters in front and doesn't like to be too close to the throttle body. Turbulence in the tube will cause erratic flow readings. The ECU gets confused about what is actually going on with the motor. This was for an LS3 blade type MAF that just fits into a flange welded to the tube. The type your running may not be as sensitive, but they are all affected by turbulence.

Here is a link to the air flow straightener that I mentioned. I bought a 4" diameter 8 to 1 ratio piece.

Honeycomb for MAF

At less than $20, it's worth a try. My plan was to mount the MAF close to the filter and use the 8 to 1 honeycomb to smooth the air entering the MAF. This would allow me to have as long a tube as possible in front of the throttle body. Of course, now I've decided to do an aftermarket (Holley) ECU, so I won't even be needing a MAF. The Holley unit is speed density. Just more junk to added to the evergrowing "to be sold" pile.