MAF calibration differences I've noticed....
 

My Z06 was orginally tuned a few years ago using edit for the cam only setup. I have now installed a set of PRC ported Ls6 heads. I LOVE EFILIVE so far I obtained a stock Z06 .bin file from Horists site and used the compare feature to see what had actually been changed on my car. Im a newbie, but Im under the impression that the Maf table should not be changed since the MAF sensor is stock, below are the differences Ive found. The car appears to be running on the rich side. Should I copy the table back to the stock settings? Any comments appreciated. The PE modifier based on RPM appears stock on my car.... Let the village idiot questions begin! :jest:

My 2001 Z06 Maf
LABELS MAF Sensor Calibration (Lbs/Minute)
Hz {link: GM.MAFFREQ} Value
1500 0.270754
1625 0.330693
1750 0.38753
1875 0.454702
2000 0.529108
2125 0.609714
2250 0.695488
2375 0.794695
2500 0.898037
2625 1.012746
2750 1.137789
2875 1.271099
3000 1.41371
3125 1.568723
3250 1.729935
3375 1.900449
3500 2.084396
3625 2.280745
3750 2.490528
3875 2.719946
4000 2.966932
4125 3.094042
4250 3.217018
4375 3.49914
4500 3.790563
4625 4.085086
4750 4.399244
4875 4.729936
5000 5.075097
5125 5.436792
5250 5.816055
5375 6.220119
5500 6.641752
5625 7.094388
5750 7.569758
5875 8.073031
6000 8.599039
6125 9.151915
6250 9.727527
6375 10.330007
6500 10.956256
6625 11.606274
6750 12.284193
6875 12.987948
7000 13.718572
7125 14.470898
7250 15.251125
7375 16.061322
7500 16.897354
7625 16.918022
7750 16.961426
7875 17.115404
8000 17.947303
8125 18.804003
8250 19.686539
8375 20.592843
8500 21.515682
8625 22.467456
8750 23.447133
8875 24.456778
9000 25.495359
9125 26.56701
9250 27.678963
9375 28.840521
9500 30.022746
9625 31.254576
9750 32.522575
9875 33.832944
10000 35.186717
10125 36.570458
10250 37.995536
10375 39.459884
10500 40.963502
10625 42.508456
10750 44.09578
10875 45.725474
11000 47.394437
11125 49.108871
11250 50.866709
11375 52.666916
11500 54.51156
11625 56.400641
11750 58.335193
11875 60.315214
12000 62.343806

Here is the supposedly stock values from a .bin on Horists site (2001 Z06)
LABELS MAF Sensor Calibration (Lbs/Minute)
Hz {link: GM.MAFFREQ} Value
1500 0.195315
1625 0.237685
1750 0.281089
1875 0.329659
2000 0.382363
2125 0.440234
2250 0.503273
2375 0.573545
2500 0.648984
2625 0.732691
2750 0.822598
2875 0.918705
3000 1.022047
3125 1.132622
3250 1.250431
3375 1.373407
3500 1.504651
3625 1.646229
3750 1.799174
3875 1.96452
4000 2.144334
4125 2.341716
4250 2.555633
4375 2.779884
4500 3.012402
4625 3.245954
4750 3.49604
4875 3.758527
5000 4.033415
5125 4.320704
5250 4.623495
5375 4.941786
5500 5.277646
5625 5.637274
5750 6.016537
5875 6.415435
6000 6.833967
6125 7.272135
6250 7.729937
6375 8.208408
6500 8.706514
6625 9.224254
6750 9.762663
6875 10.32174
7000 10.900452
7125 11.499832
7250 12.120914
7375 12.763698
7500 13.427149
7625 14.115403
7750 14.827426
7875 15.560116
8000 16.316575
8125 17.095769
8250 17.896665
8375 18.72133
8500 19.559429
8625 20.42543
8750 21.316233
8875 22.232871
9000 23.177411
9125 24.150888
9250 25.1626
9375 26.218749
9500 27.294533
9625 28.412687
9750 29.567011
9875 30.757504
10000 31.9883
10125 33.246998
10250 34.541866
10375 35.87187
10500 37.240111
10625 38.64452
10750 40.087166
10875 41.568049
11000 43.087167
11125 44.644523
11250 46.242181
11375 47.879109
11500 49.55634
11625 51.273874
11750 53.032745
11875 54.832952
12000 56.675529

Here is my recent dyno with the new heads. As you can see it appears I have a few issues. I have an Lc1 which I plan to hook up in the stock O2 location this week...

The MAF table will need to be recalibrated after you get the VE table dialed in. More then likely they just adjusted the MAF table only to compensate for the fueling as well as possibly the IFR table.

Here is the IFR table, it has been adjusted also. The car has 30lb SVO injectors. Thanks Chad. Let me know what you think. Is this correct for the SVO 30's? :confused:

LABELS Injector Flow Rate (Lbs/Hour)
Manifold Vacuum inHg Value
0.0 40.179140
1.5 40.551169
3.0 40.737184
4.4 40.923198
5.9 41.295227
7.4 41.419237
8.9 41.605252
10.3 41.977281
11.8 42.163295
13.3 42.473320
14.8 42.721339
16.2 42.845349
17.7 43.155373
19.2 43.341387
20.7 43.589407
22.1 43.837426
23.6 44.023441

Looks to me like the IFR is set unrealistically high (for
a lean result) and the MAF is also raised up (for a rich
result; perhaps to compensate IFR - or vice versa).

The Z06, descreened MAF, can be perturbed some by
the intake tract hardware but I'd step back to (1) a
believed-proper IFR table, based on what you know
about delivered fuel pressure as sqrt([FP+vac]/40)*30lb/hr
and try putting the MAF table to whatever matches the
MAF hardware you've got (descreened Z06, screened truck,
whatever this 2001 has going).

Yesterday's high fashion is today's fashion mistake....

Ok this is what I come up with for the IFR using red supras calc for 30/lb SVO injectors @ 40psi converted to our 58psi.... ??? I think this looks much closer...

Enter your values here:
Injector Rated Fuel Pressure: 40 psi
Your Fuel Rail Pressure: 58 psi
Injector Rated Flow Rate 30 lb/hr


New Injector Flow Values
MAP (PSI) MAP (kPa) G/SEC LB/HR LB/MIN
0.0000 0 4.5517 36.1254 0.6021
0.7252 5 4.5801 36.3506 0.6058
1.4504 10 4.6083 36.5743 0.6096
2.1756 15 4.6363 36.7967 0.6133
2.9008 20 4.6642 37.0178 0.6170
3.6260 25 4.6918 37.2375 0.6206
4.3512 30 4.7194 37.4560 0.6243
5.0764 35 4.7467 37.6732 0.6279
5.8016 40 4.7739 37.8891 0.6315
6.5268 45 4.8010 38.1039 0.6351
7.2520 50 4.8279 38.3174 0.6386
7.9772 55 4.8547 38.5297 0.6422
8.7024 60 4.8813 38.7409 0.6457
9.4276 65 4.9077 38.9509 0.6492
10.1528 70 4.9341 39.1598 0.6527
10.8780 75 4.9602 39.3676 0.6561
11.6032 80 4.9863 39.5743 0.6596

Thanks Jimmy, thats exactly what Im going to try. Im going to go back with a stock 2001 Z06 MAF cal, and enter these correct IFR values and see what happens.

Thanks. I'll really be set when I get the LC-1 installed. ;) I know the car is running rich now though my narrowbands are reading .950's to .980's at WOT.