over sized jets
 

im new to this site and still trying to figure everything out so i hope i do this right. i just bought a 2003 gt mustang last week. its not my first mustang but its my first v8 my other is only a pony. but this guy i bought it off is an older guy who liked to do everything himself. it has things i wanted to put on anyways like cold air intake and throttle body and spacer. but my engine light is on and my idle bounces around between 600 and 900. i have been looking more into the work he has done and its got crap on it like surge performance modules in the wires to the rear o2 sensor and a lightenin performance mod on the intake instead of a iat sensor. that stuff is ok cause im working on fixing that. but my big concern is the 30 lbs injectors on it and i dont believe it has a programmer or a different cam... what do i need to do to get this new jets working to their full potential?

Welcome to CMOC.ca. Get a tune - at least.

Welcome 2 the ZOO. Put a CARB on it ;p

efi for the mother win.


get it straight.

We're not gonna do this again are we? :lol

Welcome aboard!
Unless their is some sort of power adder,i'm wondering why it has 30lb injectors. :?
I could see 24lbs.You definitely need to have a tune done by the sounds of things.Good luck.

so i dont need to worry about putting a different cam in it? like am i just dumping fuel through for no reason or is that cause of my iat sensor not being in it cause of that dumb lightenin module thats in it. im getting the iat sensor on tuesday. so hope i can maybe get my milage back up...cause drving nice ill maybe get 350km to a tank.

I'm running cams,and still using my stock injectors!Do you know the history of this GT?

of your gt? mine. i know that im the third owner and the to previous owners bought the car from dealerships. i have the window stickers for it from its original purchase. im not sure what to say. everything thats been done to it has been done by the owner i bought it off of. and he was a real do it yourselfer. its an 03 with only 93000 on it. the guy is a sacratary treasurer for a school. so from my understanding of things and the way he was and how i seen it driven around town.. it hasn't been bagged. my fuel milage and the pulsing idle is what is really bothering me. i got a iat sensor but the wrong wire harness so that has my engine light triggered and i just cut my cats out and was going to get 02 simulators put in to fix the o2 problem that he created and tiggered the engine light for that too.. i have 3 codes setting it off right now. 2 for the o2 sensors and one for to cold of intake...

Yeah,i ment your GT.
I was just wondering if it had been juiced or blown at one point.