Want NX EFI kit, will stock 2003 GT handle it?

[dw012]

I have been looking to buy a good nitrous kit for my 2003 GT and just wanted to know if the stock motor will handle a 100 or 125 hp shot without doing any other mods? My only mods right now are a Steeda T/A and a K&N filter with the silencer removed. Will I need colder plugs or a larger fuel pump?

 

[MustangLife]

Run a 125-150 shot. Buy ngk tr-6 plugs (one step colder than stock), stock injectors are fine since its a wet kit, get a walbro or chicane 255 lph fuel pump. ditch the timing adjuster and get a flip chip, one setting n/a and the other nitrous. When you get a chip the timing adjuster is useless. But you if you plan on keeping the timing adjuster and no chip don't run anything higher than a 75 shot on a un tuned car or your engine will be dead sooner than you think.

Josh