hey guys, im looking for some technical support please. i have an 03 gt mustang with just basic bolt ons plus an x cal. im getting ready to put a zexwet kit on with a 100 shot but first i need to know what supporting mods i need. besides a new tune on my xcal, and a dyno tune, what other mods do you reccomend for this to work safely. (colder spark plugs, fuel pump, injectors, higher octane fuel besides 93 pump gas,ect.) thank you for you support

 

cherp cherp...... cherp cherp......

 

the only thing you really need for that is colder spark plugs. you can run up to a 125 shot without changing anything else.

 

thank you for you reply. so i can leave the stock fuel pump in also?? would it help at all if i did change the pump to a 255lpm?lastly, when i get a new x cal tune, should i have the timing retarder a few degrees?

 

a 255 won't help anything, just ensure your getting the fuel there and don't go lean. the stocker is adequate for that. use the fp safety switch though.

125 you shold retard (under typical conditions) about 4 degrees from where your at, or about 8-10* base timing

 

wouldnt a 255 hurt performance on a 4.6l? I was always under the impression that large fuel pumps were BAD for a returnless fuel system!

 

so i could deffinently spray up to a 125 shot on the stock fuel pump, with just colder plugs, and a new tune?? also, what is an fp switch? would that be included ina zex wet kit?

 

there is a big difference between whether you CAN... and whether you SHOULD!

 

what would your reccomendations be? you dont think it would be a good idea to spray a 125 shot on the stock fuel pump, or onthe stock motor???

 

fp= fuel pressure safety switch. It turns the nitrous off it your fuel pressure drops below a safe psi. The stock fuel pump will handle the 125 with ease. Just get a set of spark plugs 1 stage colder than stock and I recommend a window switch. If you miss a gear or your tires go up in smoke on the nitrous it will rev to the limiter before you can get your foot off the gas and most likely you'll have a backfire which sucks for you and your intake.