Sorry about bringing this old thread back to life, but I'm a RAW newbie at this tuning stuff and am sticking my toes into the water (timidly, I might add) by looking over the tune that was done on my car and then comparing the tables against a stock tune.
Now if I understand the above quotes, then a car using a fuel pressure regulator that is MAP referenced (which mine is), then the IFR table should be a flat horizontal line. Is that correct? Well, I'm looking at the IFR table in my tune, and I see this:
So obviously I am confused. The car seems to run fine except for some low RPM issues, but I would think that a MAP referenced fuel pressure regulator combined with changes in the injector pulse width forced by such an IFR table would give me some substantial issues.
What am I missing here?