To the OP, I have a John Wood VB and the FU chip. My shifts are firm, but by no means "neck-snapping". In fact they are less firm than I had feared they would be, perfect IMO. So if you haven't purchased your VB yet, you might consider the JW, and go ahead with the FU instead of the FU2.
Just my opinion from a very pleased FU owner!
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Neil
2002 Excursion LTD-Ultimate 4WD 7.3 PSD (major project - here): 35" Dura-Grapplers, V-codes+2.5" leveling kit front, C-code+extra leaf rear, 4" turbo-back, EBPV delete, 1.0AR Turbo, Bellowed up-pipes, DIY 6637, Wicked Wheel, 6.0 I/C&Trns/C, RiffRaff HPx, AIH & FRx, PHP FU Tunes!
DEARLY MISSED: '99 Lightning, '99 F-250 SD CC PSD