Just installed Neon injectors.
not sure why that chart is a bit incomplete, heres the full one

the ones for 99-09 are xf2e-c4b
which are found in the following vehicles:
FORD E-150 ECONOLINE 1999 4.2l v6
FORD E-250 ECONOLINE 1999 4.2l v6
FORD F-150 (1999 - 2002) 4.2l v6
FORD MUSTANG (2001 - 2004) 3.8l v6
FORD RANGER (2001 - 2004)
FORD RANGER EDGE (2001 - 2004)
FORD TAURUS (2001 - 2005)
FORD WINDSTAR (1999 - 2003) 3.8l v6
MAZDA B3000 (truck) (2001 - 2003)
hope that helps

the ones for 99-09 are xf2e-c4b
which are found in the following vehicles:
FORD E-150 ECONOLINE 1999 4.2l v6
FORD E-250 ECONOLINE 1999 4.2l v6
FORD F-150 (1999 - 2002) 4.2l v6
FORD MUSTANG (2001 - 2004) 3.8l v6
FORD RANGER (2001 - 2004)
FORD RANGER EDGE (2001 - 2004)
FORD TAURUS (2001 - 2005)
FORD WINDSTAR (1999 - 2003) 3.8l v6
MAZDA B3000 (truck) (2001 - 2003)
hope that helps
Senior Member
Joined: Dec 2009
Posts: 598
Likes: 0
From: Southeast Michigan
Year: 2000
Model: Cherokee
Engine: i-6 4.0
Ok was going by this chart! BIG Problem! Under option 2 '87-90 it says needs a 91-95 Fuel rail! Fuel rail won't mount to the motor, mounting brackets are way different, Fuel lines need to be changed! And based on some mixed reviews I have seen on if this actually gives you TRUE power and mileage increase kinda of skeptical of doing all this modifications!
better mpg, smoother idle, noticable power gain and throttle response some say.
Stock rail has mounts that are about 2" and bolt horizontally to the top of the motor, 91+ rail mount are 3/4" and mount verrtical
So does it make any difference if I have mixed parts? I have a 95 4.0L with the 99+ intake, but using the 95 fuel rail, FPR, and injectors. Should i be looking for the ford 24lb injectors?
Sorry if this has been covered, i did search and have read through 4 threads and pages of info on injectors, but did not find anyone running my set up.
Thanks for the help.
Sorry if this has been covered, i did search and have read through 4 threads and pages of info on injectors, but did not find anyone running my set up.
Thanks for the help.
CF Veteran
Joined: Jun 2009
Posts: 2,173
Likes: 0
From: Columbus, Ohio
Year: 1997
Model: Cherokee
Engine: 4.0, comp cam, 99 intake, apn header, neon injectors, Thunderbolt 2.5" High Flow Cat
So does it make any difference if I have mixed parts? I have a 95 4.0L with the 99+ intake, but using the 95 fuel rail, FPR, and injectors. Should i be looking for the ford 24lb injectors?
Sorry if this has been covered, i did search and have read through 4 threads and pages of info on injectors, but did not find anyone running my set up.
Thanks for the help.
Sorry if this has been covered, i did search and have read through 4 threads and pages of info on injectors, but did not find anyone running my set up.
Thanks for the help.
Right, and on your '97 your FPR is running at 49psi, so you are getting near the stock cc/min volume from the Neon injectors.
I am running the '95 fuel rail, FPR, and injectors. 91-95 FPR runs at 39psi. Sorry, should have said that in my orig post.
So then i would need to boost the pressure a bit to compensate for the reduction in flow ??
I am running the '95 fuel rail, FPR, and injectors. 91-95 FPR runs at 39psi. Sorry, should have said that in my orig post.
So then i would need to boost the pressure a bit to compensate for the reduction in flow ??
CF Veteran
Joined: Jun 2009
Posts: 2,173
Likes: 0
From: Columbus, Ohio
Year: 1997
Model: Cherokee
Engine: 4.0, comp cam, 99 intake, apn header, neon injectors, Thunderbolt 2.5" High Flow Cat
Right, and on your '97 your FPR is running at 49psi, so you are getting near the stock cc/min volume from the Neon injectors.
I am running the '95 fuel rail, FPR, and injectors. 91-95 FPR runs at 39psi. Sorry, should have said that in my orig post.
So then i would need to boost the pressure a bit to compensate for the reduction in flow ??
I am running the '95 fuel rail, FPR, and injectors. 91-95 FPR runs at 39psi. Sorry, should have said that in my orig post.
So then i would need to boost the pressure a bit to compensate for the reduction in flow ??
We are testing a Jeep right now, to see what we find. Stock 89 4.0, running option 2, with existing fuel rail. Installed last week, testing MPG. Idles a little smoother, pings at higher rpm, but it pinged before install so not sure if it is worse or the same... MPG is my main hopes, just for fun tried a power brake and it broke the tires loose... So maybe more power....? Will have MPG results next couple days..
Senior Member
Joined: May 2010
Posts: 611
Likes: 2
From: Austin, TX/ Atlanta, GA
Year: 1999
Model: Cherokee
Engine: 4.0
i also have a 99. i would like better throttle response because i have a manual. from the chart above it looks like i already have the ev6 injector. so i can not do an injector mod? please help me understand. thanks!


