tips for dialing in light throttle MAF?

[cc-rider]

I'm having a bit of a difficult time dialing in my MAF in the light throttle region (for reference...see my signature below for my set-up). At idle...it sits around 1600 hz. At cruise...it sits around 3000 hz. Its the 2000-3000 hz range that is giving me a tough time. When on deceleration, the wideband is showing very fat in this area. When trying a very light acceleration sweep, it showing very lean in this area (5%-20% lean).

Any tips on what I might be doing here? I'm thinking maybe I should ignore the deceleration fatness and simply tune using a very light acceleration sweep? Or is this typical of MAF tuning for this light throttle area and I should ignore it?

Do I need to remove my VE air PID to log MAF correctly? I know that the MAF air PID needs to be gone to do VE properly...wondering if its the same way vice versa.

Any tips would be much appreciated here....

[mowton]

Do the low rampup off idle in neutral and just feed pedal.

Can leave ve for maf tuning.

Ed M

[cc-rider]

Do the low rampup off idle in neutral and just feed pedal.

Can leave ve for maf tuning.

Ed M

Got it. Thanks!

[Higgs Boson]

dont tune the maf with any decel data. filter your data to exclude decel by using a percentage of pedal. make sure DFCO is disabled also

[mowton]

Another good way to filter is using Fuel Trim Cell parameter as a part of your filter string. With your 2010 Decel is either 7 (Evap open) or 15 (Evap closed). Good data resides at 0-5 and 8-13 with idle (6 and 14) rounding out your choices.

Ed M