Highlander

Does it exist a MAF that has broader range? A maf that takes a lot more air before getting to the 11216Hz signal...

I mean that it takes for instance 600g/s to hit that signal even though your max allowed on the PCM is 512, but you still get a proportional reading of air flowing in. The rest can be adjusted with injector sizing...

Anyone know of one?

Thx

engineermike

I've been thinking about this alot lately. . .

I cut the airfoils out of mine and bored it on a lathe out about 1/16". I then reduced the injector constant to get the Lterms close to 128.

Now, the MAF maxes out at 5,000 instead of 4,800 rpm and flows better to boot.

If you could accomplish the same, but to a further extent, I believe it would work well.

I bored mine out as far as I could without getting into the O-ring groove. Perhaps I could bore it out further and get rid of the O-ring alltogether. It could be sealed up using Permatex. Notice how the electronics has a larger ID than the aluminum ends? I could bore the ends out to match the electronics.

Mike

Highlander

So what is happening here? Simple

There is a lot of unmetered air going in... but since its still a proportional increment you still get the benefit of the maf (even if its not getting the exact air) and it maxes higher in the RPM...

Actually.. my MAF maxed only ONCE! at 607rwhp... I never got it to max out often though, and maybe it was because it was extreemely bored out...

The point with this is if we can get either 1) a bigger maf with the same elctronics or 2) simple... have a MAF that inside sends a lower signal but still has its flow curve how it shuold be...

We can tune out the difference with the injector constant and not have a problem...

I will see how can I bore mine as much as possible too.. with the new heads I might get it maxed out...

I am looking for a maf that does just that... either by one or 2 which ever works to the extent we NEED!

I prefer #2. My question is would a maf translator sent ALL the way down work? or putting a resistance of some sort... ?

engineermike

I can't figure out why your MAF doesn't max until 600+ rwhp. Most people generally agree that they max at around 500 rwhp, while some go as low as 470 rwhp maxed.

Mine maxed at 500 rwhp.

Mike

Highlander

I dont either.. I maxed it out once...

never again... I think I have the log when I did 555rwhp and it didn't max out..

Lucky i guess.. We'll see now that I had to change the MAF because it got damaged for whatever reason.

CJ

heh, according to datamaster, the last run I made the MAF was maxed the entire time. Im guessing it was a little over 600rwhp but im not for sure. When i put the motor back together i think im going to bore the MAF out like mike said and go from there.

engineermike

LJ told me that his MAF stays max'ed from the time he activates his trans brake to the end of the quarter mile.

Mike

Highlander

Funny thing is that I was checking and my maf did max out on the dyno when I did 501rwhp!!!..

But it didn't maxed out on the other runs on the street when I was pumping A LOT MORE THAN THAT...

And I have my maf AFTER the aftercooler.. so it should max out faster maybe...