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Thread: Mysterious MAFs in bins

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Posts: 1-9 of 9
2011-11-21 17:32:45
#1
Mysterious MAFs in bins
Can anyone share working TunerPro RT bins with these MAFs:

1. Lightning
2. Cobra
3. Q45
4. SR20VE 20V P12
5. QR25DE Sentra Spec-V
6. VQ35DE

I have some of these VQ MAF Tables, but would like to see their relationship to injector size, K number and latency to later do the math for different combos.

Also, another Q, I don't remember where I saw that E60 Maxima and VQ35DE MAFs are the same(?)
2011-11-21 18:30:15
#2
I compiled a list of MAF VQ tables from what I could find... http://www.sr20-forum.com/rom-ecu-tuning-file-exchange/42334-maf-voltages-vq-table.html

K value is very dependent on your injector size, so unless you find a tune with the same MAF and injectors you are essentially doing guess work.

E60 maf is for 1995-1999 Maxima's, VQ30DE. VQ35DE is 2002+. VQ35DE maf's suck, they are as bad as 00-02 Sentra/G20 maf's and die often.
2011-11-21 19:40:30
#3
How often do guys use the q45 maf?

I have one that I need to get rid of..

Dirt cheap too!
2011-11-22 21:07:14
#4
Originally Posted by Jybfan04
How often do guys use the q45 maf?

I have one that I need to get rid of..

Dirt cheap too!



Nobody ever uses those MAFs. I have one with pop charger, but don't have a clue as to how to make a bin for it.

@Vadim: Pasting the Q45 VQ Table on another bin is not helping much, that's why I'd like to see one with K number, etc, complete.
2011-11-22 21:56:29
#5
Originally Posted by gtswrx

@Vadim: Pasting the Q45 VQ Table on another bin is not helping much, that's why I'd like to see one with K number, etc, complete.


VQ tables are more then helpful, beats the crap out of making them by hand.

The community needs to stop expecting a perfectly working bin based on guess work. You have a VQ table, that's about the only constant that stays the same no matter what setup you have (injector/car wise). Then adjust your K value with a wideband or a dyno until you have the proper AFR's and your good to go.

Now if you must you can adjust the VQ table for a specific setup, but honestly that's one variable that should probably stay constant in case you switch mafs or injectors.

Now if you can get K numbers based on one set of injectors, like stock injectors, then you have two constants, VQ table and Injectors. But good luck finding a K value for Z32 maf and 259cc injectors .
2011-11-22 22:04:28
#6
Damn, people ask on this forum if N1 cams are better than Stock SR20VE cams and still someone will answer. I ask a little more informed question and..

I had checked the VQ MAF Tables thread long ago, thanks for that info.
2011-11-23 22:37:07
#7
Originally Posted by gtswrx
Damn, people ask on this forum if N1 cams are better than Stock SR20VE cams and still someone will answer. I ask a little more informed question and..

I had checked the VQ MAF Tables thread long ago, thanks for that info.


Rofl the tuning world is a ghost town. Most of the car folks are mechanical and don't care to deal with computers.

Oh and... so far on N1 cams my car became almost a second slower (0-60), but they haven't been properly tuned ...
2011-11-24 14:53:29
#8
I understand you don't want to pass your secrets to me so when we race you still have the upper hand.../ /
2011-11-24 20:09:53
#9
Originally Posted by gtswrx
I understand you don't want to pass your secrets to me so when we race you still have the upper hand.../ /


Of course I wont give you my secrets a week before racewars!!!

But seriously everything I've learned I've been trying to document in various threads on this forum. I've spent a few too many nights reading/searching for this stuff, thus want to make it easier on others.
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