What Tuner to use on a 2003 Crown Vic P71

Asked by Dec 04, 2019 at 10:17 PM about the 2003 Ford Crown Victoria Police Interceptor

Question type: Car Customization

I  have a 2003 ford crown vic p71 I'm changing
from the 19# injectors to the 26# injectors and I'm
planning on getting long tube headers and 3" pipes
with low resistance mufflers and no cats. And I'm
changing the gears from 3.27 to 3.73 and definitely
doing a custom intake probably a hood scoop. My
questions are. which tuner should I use to actually
utilize my extra fuel and air? Will my maf sensor be
pegged a 5v and therefore i need an aftermarket
one? do i need to port the heads to actually make a
real difference? And how much hp do you expect ill
add with and without ported heads?

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