Maf Flow Rate?

[pulsar gtr]

HI ALL,

If any one knows what the airflow rate on the KA24de , KA24E, CA18DE, and sr20det MAF, please post.

Thanks,

PULSAR GTR

[biosehnsucht]

KA24E supposedly flows same as CA18DET (hence why it works flawlessly for CA18DET w/o tuning).

what exactly are you wanting to know? max airflow? the flow vs voltage output curves?

[pulsar gtr]

Actually if you know the max airlflow and the flow vs voltage that would be great.

Thank you for your info, it answered one of my questions.

PULSAR GTR

[nab911]

Arnt the restrictions between mafs voltage and air flow?

[biosehnsucht]

well you can pull the VQ maps off various rom images if you know where they are, but to get the actual airflow you need to then factor in the K value and figure for K (base stoich fuel pulse width) * vqmap entry for MAF voltage (don't worry about the AFR correction maps aka fuel maps, thats to make the fuel other than stoich), that will figure that at MAF voltage X you are putting out Y fuel, and you can figure that at stoich that means Z air at MAF voltage X...

but thats lots of calculation.. I was toying with trying to write a little program that would take a VQ map offset into bin file and size and then a K value and compute the curve but never got anywhere with it..

[boost_boy]

I say, dump all of the AFM stuff and go buy a standalone and then put some of that knowledge into tuning one of them. There's not really much to gain out of toying with Rom programs, AFMs, etc except a blown engine and a crap load of unanswered riddles. That's just my $.02.... Since my CA18DE ecu was the 1st to get programmed by JWT for turbo, I was the guinea pig and it cost me a couple of good motors (lesson learned). If you had access to a dyno facility and wide band O2 sensor, then I wouldn't see the harm at toying with Rom tuning. But for the DIYer, it's a pain..............

Dee

[pulsar gtr]

The reason that I am asking, is because I would like to know what each one of them specs are for curiousity and more knowledge for sure.Personally I haven't had problems with jwt, I have been using it for over 6 years now, never blew any engines yet, yes they do run rich like hell, but so far, I am ok with it, but not sure about the people driving behind me getting high on fumes lol

PUSLAR GTR