i have a 98 rt intake and exhust and mad blaster coils...any ways i was wondering what is the stock fuel injector flow rating...like how many lb/hr is it.....i want to get after market ones but i dont want to go to big or tooo small help me please....

 

IS THIS A MANUAL OR AUTO TRANS? IF IT IS A MANUAL, HAVE YOU ALREADY CHANGED OVER TO A THROTTLE BODY OFF OF AN AUTOMATIC? WHAT ARE YOUR FUTURE PLANS FOR THE CAR. NOS, TURBO, NATRUALLY ASP? HAVE YOU RUN A SYNO WITH WIDE BAND TO SEE WHAT THE MIXTURE IS NOW? RICH/LEAN?
ONE REALLY QUICK METHOD OF CHANGING INJECTORS IS TO FIND A MUSTANG GT IN A JUNK YARD AND PULL THE INJECTORS. THIS GIVES YOU TWO SETS. THEY WORK FINE AND WILL PROVIDE YOU WITH ENOUGH FUEL IF YOU DECIDE TO JUICE THE CAR, EVEN IF YOU DECIDE TO TURBO WITH 5-8 LBS BOOST.

 

CORRECTION; DYNO WITH WIDE BAND

 

the stock neon comes with a 19lb/hr fuel injectors, the next step up is 24lb/hr. I haven't attempted this so I'm not too sure how well the stock fuel pump will handle the new injectors. The fuel rail may also require an upgrade to allow the increase in volume.

 

I'm running the 24lb injectors now and the only thing differant is the height of them about .300 is all. I also have the Indy intake and awaiting my 55mm throtle body to increse the air flow. Right now im getting a to rich code that should sort itself out after the TB change I'm hoping anyway.
The change of the injectors was a big gain for my 97 SOHC of course the Indy intake and the CAI improved things alot also.
If you want a real noticable change get the 30% underdrive pully and enjoy the ride.
Oh and no i didnt change the fuel pump or the rail I still have them stock (for now).

 

What??? Mustang injectors in a neon??? If you say so, lol

 

caps lock??? What's that? I wouldn't try parts from other models, never mind from a different automaker all together.

 

Check them out i got mine here>>> http://www.howellautomotive.com/inde...ROD&ProdID=329

 

Mustang injectors work fine. Automakers don't make injectors. Kinda like Dell doesn't make microchips.

You don't need to go to bigger injectors unless you are putting out 225-250 HP, which you aren't going to do naturally aspirated on your 2.0L. To be honest, the mods you have right now probably didn't get you any power. Skip the injectors until you actually need them.

If you run bigger injuectors, the PCM doesn't know. All it does is check O2 sensor readings in closed loop (normal driving) and adjust pulse width to maintain a 14.7 a/f ratio. In open loop (wide open throttle or idle, for example), it has a default setting and doesn't pay attention to the O2 sensor. So it's opening the fuel injectors as if you had the stockers in there, so you are getting an extra 26% fuel in the cylinders. Since the Neon already runs rich, you are now running stupid rich, and the car will be slower. To fix this, you need to find some way to control fuel flow in all situations. The most common approach is with an aftermarket fuel pressure regulator. Better still is a complete engine management system like Megasquirt. How you go about setting it up depends on what sort of forced induction you go with (turbo or nitrous). Either way, you should spend plenty of time on a dyno getting it right if you want the engine to last.

Best of luck!

 

was tge uder drive pullys easy to get too or was it pretty hard and do they hold up good...i been thinking about getting that