Originally Posted by mousitsas
Furthermore, prior to ITG I had a perfectly fueled H2W and I don't think something moved during the change.
Air jets, I know I mentioned it before but... h2w kits work great for the air box and especially with a pre filter BUT they typically include a larger idle air jet. With the free flowing filter and less vacuum, the larger idle air causes a huge lean spike at the needles transition. Hope you have checked and made sure that the idle air and idle air cutoff jets are stock, 80 and 50.
#1 = main air jet (40)
#2 = ACV (air cut valve) jet (80)
#3 = idle-air jet (50)