Quote Originally Posted by 91parkave View Post
for maf tuning you should disable PE,
No, you should never do this.

but the other info yes try not to go over 60-70%throttle- disable PE take your scan results paste into tune multiply half percent flash to vehicle reset fuel trims, rince and repeat.
Maf tuning in this manner gets you nowhere, other than a janky ass maf curve based on whatever your o2 sensor, engine diagnostics, evap status, egr status, air temperature, feels like displaying in the LTFT at the time.

I will load a stock lq4 file in and change that <20 to a 14 as stated. I noticed from 9000 hz up the lq4 has lesser numbers than my numbers now (which would make things leaner at wot). I will be adding 2% fuel in that area to be safe. Sound good?
You want to leave the LQ4 file completely stock if at all possible. Changes here are the absolute worst place to make adjustments for "mystery" things being wrong with your tune. The maf sensors almost never have variance from car to car unless you have an obvious air filter issue... which I usually handle in the IFR value, as its the mathmatically easiest way to adjust a logarithmic equation that is the maf curve.

If all the trims are spot on then there should be no worry? But maybe its a preference thing?
Its not preference or anything.. tuning the maf is just wrong if you have a stock maf sensor. If you have trouble with your commanded afr matching actual afr in the WB, the easiest way to adjust for this error is in PE, as it is not controlled by the narrowband.