extrapolation .

You just have to change the last few voltage numbers on the chart (up to a max of 5v)and draw a straight line from about 300g/s on up . Here is mine which only goes to 380 because I didn't need to go any higher.

 

You might want to fix that curve...

 

You are soo predictable MM ....

 

If I am predictable, then why didn't you fix it first?

 

Well for starters , if I thought there was a problem with it I wouldn't have posted it without saying so . BTW It has worked well for me for over a yr now so I have no reason to think there is a problem with it..

Your predictability is more in the manner of your reply . IE Saying it's wrong without actually attempting to show why you think it's wrong.

If you do have something constructive to say I'm all ears (or eyes in this case) .

 

Does that shape look right to you?
"[D]raw a straight line from about 300g/s on up"??
Seriously?

If it has "worked well for [you] for over a yr", that is because you compensated for the error elsewhere in the calibration.
Now, sure, we all make adjustments.
But why would you give an example like that which you should know is wrong?

 

Actually ,knowing that the voltage steps change at 4.41v and up , yes it does .
Where do you see a problem ?

 

since when does any sensor of a resistive nature change from exp/log to linear in its operational range?

 

It doesn't - but the curve becomes so slight that a straight line is good enough .
BTW - If you look at the stock MAF curve from Mazda - that is exactly what they do as well .
Never heard of this ? .................A curve is a series of straight lines .


Still waiting for MM's explanation of what is wrong with the maf curve I posted .....

 

except that it isn't even properly aligned WRT the trend of the section before where you started it

 

Your MAF curve should be just that- a nice smooth flowing curve. yours is not. that's whats wrong.

 

The scale from 4.41v and upwards is different from that before it - That is why it kinks off from that point onward .
The reason I did this was I knew I didn't need 400g/s and wanted slightly better resolution above 300 gs than I would have got had I just made the scale the same all the way through .
Anyone that has studied the stock map will see that Mazda does the same thing ............

 

justifying one fail with another, congratulations ....

 

Reading/math comprehension > you .

 

Anyone else have a MAF calibration graph they'd care to share then?

Seriously, give people the benefit of the doubt that they're trying to help out...even if they "might" be giving out more harmful than helpful information, at least their intentions are good. Try something other than the juvenile answering a question with a question, or worse, a rhetorical question, or better yet, just get the F out of the thread.
It's easy to be a dick, you're not impressing anyone.
Peace. ( no pun intended)

 

Seeing everyone is having such a hard time trying to understand what I did there - this may help . Notice how the SCALE from 4.41v onwards changes to 0.8v per step vs .11-.12v on all the previous steps . That is why the line kinks off to the right . Mathematically g/s is a straight line all the way ......

 

so then you cant draw a properly scaled graph?

 

I absolutely agree. This is one of the main reasons I got so frustrated with exploring the limits of my renesis. It was nearly impossible to get a straight answer if I had a technical question. I hated having to play the Rx8club game and ask in some sideways manner to try to get the info I was really after. Good information is too.....expensive around here.

We are fortunate to have a few much appreciated exceptions to this(Kane, Brettus, OD ). If only we had a couple dozen people like them on these forums more people would be encouraged to explore the limits of the renesis. I said this when Kane finished his..... But it kills me that builds like this are exception and not the norm.

 

Bull ****.

The problem around here is no one wants an answer to a question if it doesn't validate what they already believe.

Furthermore, no one wants to do the legwork to understand the reasons and metrics for what are often arcane answers to questions that were voiced in a manner to hide their arcane nature in the first place.

 

I gave a valid reason for doing it the way I did .
Now , how about YOU give me one GOOD reason not to do it that way other than - the rx8 club might think it looks funny .

 

I tend to agree with Mawnee and RG... i read around the forum quite a bit before i decided what i was going to do, and saw alot of that 'dickishness' directed @ people tryin to ask questions. Really disuaded me from wanting to ask questions around here.

Granted, many of the questions i saw being asked were newbish and had been asked many times over, but just because someone's knowledgeable, doesnt give them the right to be a jerk....THAT right comes from bein AMURican

 

I find apathy to work for me.... if that helps.

I totally appreciate all the help I have been given, and I try to be as public as possible with all of my stuff in order to "keep everyone in the loop". That being said, I just go into knowing I am going to be violated by the forum, and I don't care...haha,

We are a family like a pack of coyotes is a family; we roll together but we are totally willing to eat our young.

 

Another typical day at the RX8club comes to a close

 

Your problem MM is that you expect everyone to "learn" the way you would. But not everyone thinks, processes and/or absorbs the way you do.

I didnt learn to work on cars by studying physics, metallurgy, thermodynamics, aerodynamics and fluid mechanics before forging the steel, casting the parts and building one from scratch without ever seeing one. I learned by taking apart a perfectly running one and/or fixing one problem at a time. I figured out what was broken by comparing a good part to the bad.

This Maf scale thing is a prime example. Would it really be so hard to post what you consider a proper scale and say "This is what it should look like, and heres why"

 

what gives you the right to make demands on someone elses knowledge and effort without consideration for either?

developing a friendship and asking nicely in private is likely to yield a more positive result

but is no guarantee. I get a lot of questions about generic off the shelf parts a lot, but unless I have an exceptional friendship with that person it's just not worth the time/effort to respond i.e. somebody asking me about how good a set of used Stance coilovers are when I have a Koni 2812 racing setup. It's like asking a Porsche owner for feedback on purchasing a used Geo Metro.

as cold as it may sound, if you don't have the background or understanding about things it's not the other persons problem, that person has his own set of stresses, issues, problems, time restraints etc. in life to deal with too

sometimes the smartass answer is not only the easiest it was likely made in jest, some people take this poop way too seriously, it's an intrawebz forum ...