Quote Originally Posted by Aint Skeered View Post
by tuning this way, do you leave the VE table alone? just play with injector flow rate is How my car ws tuned by a professional tuner and when I posted it on here last year when I first bought EFI live , everyone told me to start fresh and get away from the injector flow rate tune. I have to say, It worked pretty well as for WOT .

Does Ve Table play a roll still with this method?
This process simply reverses the order of tuning and leaves the MAF curve stock since it should still have it's screen.

The idea is, drop the B0120 so you're in MAF only mode and tweak the IFR until you end up with an accurate representation of your IFR table. When you're done, it should be fairly linear. If not, there may be other injector tables that are in need of adjustment.

Next, you go speed density like normal (kill the MAF with Fail Frequency). Using your new IFR table, dial in the VE table. Once you're done, you should be able to re-enable the MAF, restore B0120 to stock or there abouts, and not have your fuel trims sky rocket like everyone always does.

Why do it this way? Personally, I'd much rather adjust the handful of IFR cells rather than the 84 MAF cells. Plus, I find it hard to believe that a cam & heads can drastically alter the MAF cal. You put the stock lid and bellow in and you'll still have to adjust the MAF curve with the other way. That to me says something is fishy and something is being fudged. So, fudge the MAF or the IFR??? I say fudge the IFR. Too many other tables rely on what the MAF reports (timing, trans pressures, etc.). That should stay stock IMO.