Depends on your method of tuning. Per concept 1, you would use the same principles of the AutoVE tutorial and apply them to the MAF table. Per concept 2 (guys chime in if I misunderstood) you would accept your MAF table as a constant and tweak your IFR table.
Quote Originally Posted by SSpdDmon View Post
Correct - assuming you have the right MAF table for the hardware you're running and you've dumped the B0120 threshold to something below normal operation (i.e. 100rpm).
But how exactly are you logging the IFR? I read:


IFR Table {B4001}: Based on what you believe to be true about your injectors, you should use the IFR spreadsheet RedHardSupra made available on his website (or a similar one) to initially set this table. Then using the reciprical of your BEN factor for your WBO2 along with the MANVAC pid, you'll correct this table. Remember, raising values lean out AFRs and reducing values richen AFRs in this table. This will become an important constant that you will base the rest of your tune on.
..I'm just not understanding what you are actually logging? When I open a new map in Scantool for example, I use the MANVAC pid as my row, use the BEN LC1 factor as the data but what am I using for the column, and how is the commanded AFR not influencing the final amount of fuel injected? Or should I be setting the same commanded AFR for an entire section of B3605 (say setting all rows 60-80*C ECT at 12.5 AFR) and then driving the car and hitting as many vacuum points as I can and then using the difference in commanded AFR and actual AFR to set the IFR amounts? (Did I just answer my own question? )