Please don't take it out on the poor engineer. They were probably just finishing up all the engine bay routing documents just as a project lead dropped it on them. Marketing's latest test group wants more engine noise in the cabin and the exhaust is already finalized. So he/she gets the...
I guess first place to check is if someone at a dealer can look through the parameters available in IDS. Best case is it can be changed in IDS and is just disabled by default from the factory.
The Steeda spring helped a lot but I still had a bit of jerkiness that I finally found would go away if i took my time on the 1 - 2 shift. AKA very smoothly push the clutch in, go to neutral, move the shift down towards second until you feel the synchronizers working, let it drop in to gear...
I bought my GT PP back in Feb and due to the cold had a similar predicament as you. Here is what I came up with:
Immediately replaced Pzeros with DWS 06 on the PP wheels (fantastic A/S tire).
Drive the mustang daily unless it snows.
This week I just swapped the Pzeros back on and plan to use...
I've been super happy with my 16 GT PP. My commute is almost entirely highway (minimal traffic) and even romping on it around town I am averaging 21mpg so far.