E38 MAF FREQ issues

[MarkR8]

Hello guys, could do with a little guidance.

I have replaced the MAF on my LS2 6.0L with the LS3/LS7 type blade insert style. My os is 12612381 and original cal 12612381.calz.

Because my OS has the low and high MAF frequency conversion tables and the lower limit being 1000Hz I am getting P0102 and cannot set low enough to avoid it.

I'm considering Flashing with another E38 os that has a single MAF frequency conversion table so I can dial this intake in (it is an OTR intake for the HSV W427).

Provided I am prepared to do a lot of copy and pasting for the various tables throughout the tune should this be a feasible work around?
I haven't seen a patch to bring my existing tune into a single conversion table.

Question is: Will the LS3 OS flash idea work or is there an easier way that I haven't thought of?

[Tre-Cool]

you CANNOT put a single MAF table tune in a dual maf table ECU. it will brick it

[swingtan]

Have you actually measured MAFFREQ2 to see what the MAF is currently putting out?

The normal process would be to gather sufficient data to make an informed decision. I'd look at what the MAF frequency was wit the new MAF, then adjust C0302 to suit.


Simon.

[gmh308]

Hello guys, could do with a little guidance.

I have replaced the MAF on my LS2 6.0L with the LS3/LS7 type blade insert style. My os is 12612381 and original cal 12612381.calz.

Because my OS has the low and high MAF frequency conversion tables and the lower limit being 1000Hz I am getting P0102 and cannot set low enough to avoid it.

I'm considering Flashing with another E38 os that has a single MAF frequency conversion table so I can dial this intake in (it is an OTR intake for the HSV W427).

Provided I am prepared to do a lot of copy and pasting for the various tables throughout the tune should this be a feasible work around?
I haven't seen a patch to bring my existing tune into a single conversion table.

Question is: Will the LS3 OS flash idea work or is there an easier way that I haven't thought of?

Use these numbers to start with - they are dual MAF table blade MAF numbers. Wont be spot on but a good start. Dont flash any other OS in. You may partially brick the ECM or temporarily brick the car. :)

LABELS MAF Frequency Conversion (Low Flow) (Grams/Sec)
Hz {link: GM.MAFFREQ} Value
1000 3.000000
1150 3.437500
1300 3.773438
1450 4.250000
1600 4.890625
1750 5.687500
1900 6.648438
2050 7.757813
2200 9.031250
2350 10.468750
2500 12.140625
2650 14.023438
2800 16.093750
2950 18.312500
3100 20.726563
3250 23.453125
3400 26.406250
3550 29.617188
3700 33.007813
3850 36.593750
4000 40.398438
4150 44.562500
4300 49.000000
4450 53.742188
4600 58.750000
4750 64.210938
4900 70.078125
5050 76.312500
5200 82.906250
5350 89.882813
5500 97.218750
5650 104.890625
5800 112.898438
LABELS MAF Frequency Conversion (High Flow) (Grams/Sec)
Hz {link: GM.MAFFREQ} Value
5800 112.898438
6000 124.218750
6200 136.546875
6400 149.781250
6600 163.921875
6800 179.031250
7000 195.093750
7200 211.921875
7400 229.523438
7600 248.156250
7800 268.226563
8000 289.429688
8200 311.632813
8400 334.843750
8600 359.007813
8800 384.851563
9000 411.968750
9200 441.460938
9400 470.000000
9600 501.000000
9800 511.992188
10000 511.992188
10200 511.992188
10400 511.992188
10600 511.992188
10800 511.992188
11000 511.992188
11200 511.992188
11400 511.992188
11600 511.992188
11800 511.992188
12000 511.992188
12200 511.992188

[MarkR8]

Thanks GMH308 for the info. I was a little per-occupied when I posted this but that info helps.
So far I have logged MAFFREQ2 and WBO2 but was unable to utilise my Maps for logging, I couldn't get the log to populate any more than the first cell so I used Dash B and entered the data as recorded and I thought I had it pretty close but im still off the money on my AFR.

I am going to put it back to SD and redo my VVE as I believe the intake might be affecting my table.

Could someone please have a look at my Calc.pids as I can't seem to log everything I need to do the MAF cal?
It's E38 ECU and I use serial LC1 WBo2.

Thanks very much so far.

[joecar]

Post a pic of your map, and also a pics of the map properties data/row/col tabs.