Could someone make me favor and do test SD mode in 05-10 mustang?
What needs to be done, put car into failed maf mode, easiest disconnect maf, disable all errors will come,
log fuel trims and remember what they are, then change lwfm tables lot, for eg 30% all cells and do log again if something has changed? I'm getting no change in about 10 mustang I tested for this. Usually idle is 20% rich, middle about 0% change and higher load lean. Changing LWFM tables makes no difference in drivability, tip in, tip out etc, even if zeroed and maxed. But all other SD tables has matter, mixture is not changing, but drivability sucks when they are changed.
if someone has access to SCT, could do exactly this same and change values for exact same amount, do test and see if with SCT in changing something. If so, read tune with SCT and post both, HPT written and SCT written, this will help support to find what's wrong.
Running car in SD mode with draw thru setup with turbo makes life easier, second that putting cammed mustang in SD mode for idle and low load makes also huge difference in drivability.
Thanks
