You nailed it!! This update fixed my issues. Just for the sake of knowledge, what parameters were corrected/adjusted? Thanks.

Also, on a side note, before I manually installed this update on my intune, I let it automatic update to see if this (1t01ef.ITF) would update on its own. It did not. It ...

Mine too. I installed the 91 tune and a set of NGK Iridiums gapped @ .028. Rough idle but ran great for a couple of hundred miles. Then it developed a hesitation at low rpm (take off stumble). I regapped the plugs to .032ish and it now idles silky smooth, accelerates smooth, a huge improvement ...