Quote Originally Posted by unc25
You should do more research on police intereceptors before you come on and spread nonsense.....
First there is no chip, only a slight increase in the speed limiter, meaning you can top the car out higher than the civilian Crown Vic...Second The motor is a de-tuned 4.6l meaning that it doesnt have the PI heads that the 2003+ Vics and all the 4.6l mustangs have...

Sure bout that?? last time i read about PI heads, not ALL 4.6 mustangs had them but otherwise right on the money