A V-AFC costs like $330. An hour on the dyno with someone who knows what they're doing tuning the V-AFC runs anywhere from $100 to $200. You don't need to "optimize" the fuel curves if you just have the standard bolt ons. Honda motors in general are tuned pretty close to peak efficiency and you have to open them up to get significant gains. The stock ECU can handle the little bit of extra air intake and little bit less exhaust back pressure from the typical i/h/e setup just fine.