i just bought a 2007 mercury grand marquise and it has 224 horsepower any help to increase it to 320

Yea l could have my wife take some of those horseys out of my Plow and put 'em in your ride, she loved to torch a wrench like no other!

Sure find a crashed Mustang GT replace the engine controls and motor. The transmission too.

You want to increase #100 horse power to your new car.2007.. To do what you want the engine block has to be reworked along with the valves.. This will kill all warentees on everything.. Buy the way l need $25,000 in advance.

That is not a good thing , Why did not you buy a mustang with a V8 and you would not be asking that question You are asking for all kinds of problems , hope this helps.

supercharger and chip would be easiest way.

Mercury Murader did it with a 4 valve version of that engine.

Police get more power by better intake, reworked PCM, and better fuel injectors among other things.

but best way is step a..sorry

When u purchased the car u should have looked for one with dual exhaust which is at least 230 + hp. They actually move pretty good, l have a 2002 with dual exhaust & the same interior as the Marauder, bucket seat center console, floor shift.

There is a chip change that can be done to those upping them to around 270hp, this is what the limo shops do with the Lincolns. It does not need any mods except u r better off with dual exhaust to help with the added power.

Either way u can ruin the warranty check with the dealer they might have suggestions.

More power, change the axle ratio