What to do to make my car faster

These chips normally run more than that, so I would be skeptical. The chips can also cause havoc with your electrical system if they are bad. They may also cause you to fail emissions tests if your state has them. Proceed with caution.

Should do mechanical modifications to your Vic. PI heads and intake, and Police Computer. Computer will make the transmission let you go faster than 85. :D

I added a 4.10 posi, 180 degree thermostat, K and N filter and programmed with Hypertech. Big difference in performance! Ten foot burnouts at launch and sometimes chirps tires going into 2nd with stock automatic transmission. In my opinion cold air inductions can hurt performance in my car. Most are open at top and pick up hot engine air when the hood is closed. A dyno test with the hood open cannot be accurate. My 2008 P71's stock air intake draws cooler air from the grill area. By the way, it only turns 2000 rpm @ 55 mph with the 4.10 gears. Jim

K&N flat performance air intake bigger intake box or slightly cut. Flowmaster Super 10, and if you do the Fords throttle response trick you can do 0 to 45 4 seconds single exhaust Mercury Grand Marquis 2004. K&N performance oil filter good gas. U got a muscle car you can catch up to Windsor 5.0 and Mustang 4.6 GT even RT Chargers