Dumb MAF Question

[Shane]

Hey Guys-
I'm starting to think that my Granatelli MAF may be a piece of crap (lots of you told me this, but only AFTER I bought it). Here's the question...

How often should the MAF peak at 255? Every time you go to WOT? When I go to WOT, the highest I will usually see is like ~140ish. Granted I'm doing this on the street, so I usually cut out at 65-70 mph.

The other question is this. With the Granatelli MAF and the Translator and a custom burnt chip, I was seeing ~7 gps at idle off the MAF. With the Extender chip I see between 0-4 gps at idle, same MAF. That's with the limited on or off on the Translator Plus.

Is this MAF garbage?

 

[ES1]

I think I have seen post that with the extender chip, it will only show 1/2 of what the MAF out put is and I did not think it was limited to 255 top.

 

[DavzGN]

The ECM can only see up to 255 so the signal coming from the Maf is cut in half, so the maf sends 280 and the translator converts it to 140 to send to the ecm. So your 4 on the scantool would be an 8 on the MAF.


HTH
David

 

[Shane]

Huh. That pretty much sums it up. Thanks guys.