MAF Calibration (No Spreadsheets!)

[neil]

Try right clicking and rename the file " maf_error_206.map ".
You should then be able to import it.

Regards,

Neil.

[heavyfoot]

SSpdDmon, Do you still have that spreadsheet for the MAF % correction avaliable?

[MoTruck]

Ok, this is probably a dumb question, but here goes. When you disable the LTFT's and STFT's, does this eliminate the O2 sensors? Will I have to have a separate bung in the exhaust for my LM1 sensor to do the MAF calibration? Thanks!

[TAQuickness]

MO - disabling the trims is not necessarily the same as eliminating the NB's. By disabling trims, you are no-longer adjusting fuel from the NB feed back. A few more steps would be required to eliminate the NB's all together.

But, once the trims are disabled, you can physically remove the NB's and install WB's for tuning. If desired, you could go a step further and use one of your WB outputs to simulate the NB's as well.

[MoTruck]

So, once you disable the NB, you just pull it out and leave it plugged in to the harness while you use the bung for the WB? Thanks.

[TAQuickness]

I wouldn't leave it plugged in. In fact, all 4 of mine have been sitting in a box in my garage for close to 2 years now.

[Bruce Melton]

Careful TA, he his "up North" where every day is not the same.

[MoTruck]

If I understand correctly, I need to do the following to accomplish the MAF tuning.

1. Disable the LTFT's and STFT's
2. Remove a NB to place the WB in it's place.
3. Disable the DTC (MIL) for the NB, so it can be unplugged.
4. Drive and log the MAF ben that is in this thread, like the Auto VE tuning.
5. Paste the correction factor into the MAF table.
6. Drive, Log, paste again. Repeat this step until satisfied.
7. Re-install NB, turn fuel trims back on.

Is this basically the process? I am trying to avoid having to install a separate bung for the WB. Thanks.

[TAQuickness]

that's it in a nut shell.

Bruce - I hear ya. Winter time here is rather dynamic. One day we have a high of 80, the next 50.

[SSpdDmon]

SSpdDmon, Do you still have that spreadsheet for the MAF % correction avaliable?

Yes...pm me your email and I'll shoot it over to you.