Fuel changes I agree will be an issue, but timing changes? The non VVT doesn't change the cam timing, so when MDS is activated, it just drops every other cylinder in the firing order via the lifters. 1-8-4-3-6-5-7-2 to 1-4-6-7. Don't get me wrong, EFI is the way to go, a MSD 6013 came my way and an intake, so I decided to go in that direction, at least for now....
