Not sure about the fpr, i dont have one yet, but heard the holley and crane suck? my car did hesitate when i blipped the throttle a while back, i found a corroded coil wire, and my IAB and TB was in need of a cleaning, does your car idle rough?
i also went ahead and cleand the upper plenum, and all of this helped sooo much

i gained a mph or 2 from the cold air, im sure my O-R h-pipe im getting soon will net me a couple more mph, but i know the low end will drop.
So i have a different problem, my engine breathes good, but cant exhaust it out fast enough.