Thread: MAF Voltages (VQ Table)

Removed the E60 (Calum) table since it's definitely wrong.

Searched and verified the E60 MAF VQ table to be part of the A32 tune. It's hard to find A32 tunes though, so please chime in if you have it from something else. Supposedly Q45 97+ and RB25 used the E60 maf too.

I'm not John, but I can tell you MAF 1 VQ table is for a very high hp car with big injectors.

Maf 2 has the smoother curve of the two.

The Mustang Cobra from 1990-2004 had horsepower rating ranging from 240-390 hp.

My guess would be MAF 2 VQ table is for the earlier Cobra.

As I understand it, you want to place a VE MAF sensor inside 3.5" pipe?
If so, there will be several hurdles you have to overcome.

First, you will hit the max K value, which is 65535, unless you up the injector size. You will need something above 500 cc.

Second, there is a low voltage trigger setting in some Bin that will trigger a limp mode running. Find the Bin that has the setting below .1 volts. With a 3.5" housing, your idle voltage will be around .5 volts or lower. My car idles a .5 volts and cruise at 1.3 volts for a 80 mm housing.

Well I will be running 555@4bar but using e85 so the k value will be simmilar to a 450cc ish.

Do you have any better sugestions?

At first glance, your 555 injectors are adequate, but after doing some research on E85, you will need to go bigger on the injectors.

For E85, stoich is 9.8 afr and best power is 7.65-8.2. So, you are right by saying your 555 injectors will be like 450 ccc with E85.

My suggestion to go with bigger injectors would be the easiest, simplest route.

Your other option is to first build the VQ table with regular gas. Once you have a nice smooth VQ table for regular gas, you can then mutiply the whole 64 data point by 1.33. That's a lot of number crunching.

Another way is to get a MAF airflow converter piggback electronic that intercept the output signal from the MAF and add 33% correction. As I understand it, some of these airflow converter only have limited range with only 8 rpm points.

Good luck.

Looks like lightning maf would be way easier after all. Anone have a vq map for the lighning maf?

I have the one I use on my RB20 from nistune.

65535
62483
59528
56669
53903
51228
48644
46210
43872
41613
39449
37363
35343
33419
31576
29777
28039
26364
24731
23159
21637
20171
18748
17402
16117
14893
13764
12678
11643
10669
9761
8912
8113
7355
6649
6004
5426
4883
4391
3941
3531
3162
2821
2506
2223
1959
1706
1473
1260
1069
897
751
622
510
411
330
258
196
142
97
61
33
14
3

Ok, this is the Vq map ive been using on a Q45 maf, was driving on it today, and it runs fine. Not sure if its the same as any other maf, but it works. Gets to around 4.2 volts on a sr20ve 20v engine with 20v/N1 cams and 3" exhaust.

Awesome thanx

It's the E60 VQ table.

It's a good table to use as template when building a custom VQ table. I also recommend the SR20VE, N1, and B14 VQ table.