fuel injector upgrade
Senior Member
Joined: May 2010
Posts: 530
Likes: 0
From: Nevada City, California
Year: 2K
Model: Cherokee
Engine: I6 with Mustang fuel injectors; 60mm Throttle Body;
Here's a set of 8 Ford 19lb injectors on eBay for 80 delivered. If 4 people want them we can order 3 sets and then split them up. We can get 6 for 60.
http://cgi.ebay.com/ws/eBayISAPI.dll...ht_1442wt_1139
http://cgi.ebay.com/ws/eBayISAPI.dll...ht_1442wt_1139
Newbie
Joined: Nov 2011
Posts: 11
Likes: 0
From: Mexicali, Baja California, Mexico
Year: 1988
Model: Cherokee
Engine: 4.0L 242cyl
This here's a good thread I found interesting, very techey. I haven't used the data except to make up my mind as to what upgrade I'll be doing in the near future.
https://www.cherokeeforum.com/f2/10-...+INJECTOR+SWAP
it's pretty long and fairly recent, and pretty much weighs a lot of pros and cons.
Good luck! Hope it helps!
https://www.cherokeeforum.com/f2/10-...+INJECTOR+SWAP
it's pretty long and fairly recent, and pretty much weighs a lot of pros and cons.
Good luck! Hope it helps!
Senior Member
Joined: May 2010
Posts: 530
Likes: 0
From: Nevada City, California
Year: 2K
Model: Cherokee
Engine: I6 with Mustang fuel injectors; 60mm Throttle Body;
Junior Member
Joined: Jan 2011
Posts: 50
Likes: 0
From: 5150
Year: 1999
Model: Cherokee
Just went to my local Napa auto parts store and picked up -
http://www.napaonline.com/Catalog/Ca...830_0182270088
Low and behold- 3 with Ford logos, 2 with the Ford logos polished off (with new part no.s stamped on them), one remake of the Ford. Ill be watching the plugs daily for a bit.
I carry about 1000 pounds of gear in the back. (http://www.quadratec.com/products/56010_11.htm still sags a little) and was able to spin the tires on take off. Never been able to do that loaded before. Now Im concerned about the transmission...
Ill be watching the mileage closely this week and report back. But it already runs much smoother. (Computer reset per the manual.)
Ford Info- The latest injector for the 99-00 V6 Mustang is a CM-5176. Ford wants your right arm for them and there were only 4 available in warehouses nationwide when I checked. about $150 a copy.
http://www.napaonline.com/Catalog/Ca...830_0182270088
Low and behold- 3 with Ford logos, 2 with the Ford logos polished off (with new part no.s stamped on them), one remake of the Ford. Ill be watching the plugs daily for a bit.
I carry about 1000 pounds of gear in the back. (http://www.quadratec.com/products/56010_11.htm still sags a little) and was able to spin the tires on take off. Never been able to do that loaded before. Now Im concerned about the transmission...
Ill be watching the mileage closely this week and report back. But it already runs much smoother. (Computer reset per the manual.)
Ford Info- The latest injector for the 99-00 V6 Mustang is a CM-5176. Ford wants your right arm for them and there were only 4 available in warehouses nationwide when I checked. about $150 a copy.
Last edited by chpalmer; Jan 23, 2013 at 01:10 AM.
Newbie
Joined: Mar 2013
Posts: 1
Likes: 0
Model: Cherokee
Sorry if this is coming off as a noob question but after reading this whole post I am more confused now then before. I want to do the swap for a 95 xj stock motor.
From what I can tell the injector options out there are
the neon 703 swap (Bosch part # 0280155703) ev1 plug with clip.
the neon 784 swap (Bosch part # 0280155784) ev6 plug with clip.
the ford 19# swap (part # 0280155710) ev6 plug no clip.
the Ford 19# swap (part #XF2E-C4B) UScar plug, with clip
the Bosch #0280155784 swap UScar plug, clip?
the ford swap (MOTORCRAFT part #CM-4956,CM4956 XR3Z9F593AB, XR3Z-9F593-AB, XR3E9F593A4B, XR3E-9F593-A4B, YR3Z9F593AB, YR3Z-9F593-AB = all the same injectors) UScar plug? clip?
Am I correct I can make any of these injectors work as long as I cut my EV1 plugs and swap it for what ever style plug the injector requires?
the only difference between the the 95 injectors and the 96 injectors is the 95 uses EV1 and 96 uses EV6. The 99+ injectors are UScar?
So what all this being said the ford swap (MOTORCRAFT part #CM-4956,CM4956 XR3Z9F593AB, XR3Z-9F593-AB, XR3E9F593A4B, XR3E-9F593-A4B, YR3Z9F593AB, YR3Z-9F593-AB = all the same injectors) as stated in the quote below would be the best swap if money wasn't the primary concern for my 95 XJ.
It seems if I want to run some of these newer injectors I will need a Hesco adjustable fuel pressure regulator to take the pressure to 49 lbs correct?
I am also toying around with installing a 99+ intake will these injectors work with it?
I am sure this has been kicked around many times I tried the search be there doesn't seem to be a end all summary on injectors.
From what I can tell the injector options out there are
the neon 703 swap (Bosch part # 0280155703) ev1 plug with clip.
the neon 784 swap (Bosch part # 0280155784) ev6 plug with clip.
the ford 19# swap (part # 0280155710) ev6 plug no clip.
the Ford 19# swap (part #XF2E-C4B) UScar plug, with clip
the Bosch #0280155784 swap UScar plug, clip?
the ford swap (MOTORCRAFT part #CM-4956,CM4956 XR3Z9F593AB, XR3Z-9F593-AB, XR3E9F593A4B, XR3E-9F593-A4B, YR3Z9F593AB, YR3Z-9F593-AB = all the same injectors) UScar plug? clip?
Am I correct I can make any of these injectors work as long as I cut my EV1 plugs and swap it for what ever style plug the injector requires?
the only difference between the the 95 injectors and the 96 injectors is the 95 uses EV1 and 96 uses EV6. The 99+ injectors are UScar?
So what all this being said the ford swap (MOTORCRAFT part #CM-4956,CM4956 XR3Z9F593AB, XR3Z-9F593-AB, XR3E9F593A4B, XR3E-9F593-A4B, YR3Z9F593AB, YR3Z-9F593-AB = all the same injectors) as stated in the quote below would be the best swap if money wasn't the primary concern for my 95 XJ.
It seems if I want to run some of these newer injectors I will need a Hesco adjustable fuel pressure regulator to take the pressure to 49 lbs correct?
I am also toying around with installing a 99+ intake will these injectors work with it?
I am sure this has been kicked around many times I tried the search be there doesn't seem to be a end all summary on injectors.
I used the Ford XR3Z 9F593 A4B out of a 6 cyl Ford '99 Mustang.
Here is where I got the info from: http://www.ausjeepoffroad.com/forum/...ad.php?t=92236
99-01 Cherokee
These have a EV6/USCAR type injector electrical connector That is they are different from the earlier models.
Stock Jeep injector:
22.5lb/hr@49psi (236cc/min@337KPa)
or 21.14Lb/hr@43.5psi (222cc/min@300kpa)
Owners have used Ford 19# XF2E-C4B=204cc@43.5PSI injectors with success, they have the same specification as the #19 ford 280155710 (i.e. 4 hole ev6 style with a nominal working pressure of 39PSI) just with a UScar electrical connector and take clipnuts.
More flow (much closer to the stock injector flow rate than the ford XF2E-C4B) is provided by Bosch #0280155784 (22.5#=238cc@43.5psi), which are the same as the older Neon injectors 0280155703, but with a uscar electrical connector.
Chrysler part # 4669938 from;
DODGE CARAVAN (1998 - 2000)
DODGE NEON (1998 - 1999)
DODGE STRATUS (1998 - 2000)
Another alternative for the stock 99-up 4.0L is the (22.8#=240cc @ 43.5psi) Ford XR3Z 9F593 A4B / XR3E 9F593 A4B which is the newest design and offer even better performance.
(MOTORCRAFT #CM-4956,CM4956 XR3Z9F593AB, XR3Z-9F593-AB, XR3E9F593A4B, XR3E-9F593-A4B, YR3Z9F593AB, YR3Z-9F593-AB=all the same injector)
This injector has a single hole and looks disappointingly similar to the stock 99-'01 injector .
The main method for increasing atomization in the ev6 injectors was by increasing holes number and reducing each hole size. One can't add holes and reduce size indefinitely, so a new approach was needed when regulations became more strict.
The newer design is not relying on number of holes, it's a completely different approach with the difference in the internal orifice which allows far better atomization. This also gives an even better ability to work on variable pressure, as with most newer cars the pressure is computer controlled.
This, in turn, gives more accurate fuel mixture at any given pressure.
You can check the two in your fuel rail, when out, and compare the spray pattern, with the newer the fuel is like a mist.
Currently these can be bought near new for around $60 a set on ebay.
If even more flow is required the “1999 only” Taurus/Sable injectors, 0280155849 can be used.
This EV6 injector will flow 265cc/min @ 43.5 PSI, same as the FMS M9593-A302(24 lb) but with USCAR connector so the original injector clips on the loom will plug straight on..
Here is where I got the info from: http://www.ausjeepoffroad.com/forum/...ad.php?t=92236
99-01 Cherokee
These have a EV6/USCAR type injector electrical connector That is they are different from the earlier models.
Stock Jeep injector:
22.5lb/hr@49psi (236cc/min@337KPa)
or 21.14Lb/hr@43.5psi (222cc/min@300kpa)
Owners have used Ford 19# XF2E-C4B=204cc@43.5PSI injectors with success, they have the same specification as the #19 ford 280155710 (i.e. 4 hole ev6 style with a nominal working pressure of 39PSI) just with a UScar electrical connector and take clipnuts.
More flow (much closer to the stock injector flow rate than the ford XF2E-C4B) is provided by Bosch #0280155784 (22.5#=238cc@43.5psi), which are the same as the older Neon injectors 0280155703, but with a uscar electrical connector.
Chrysler part # 4669938 from;
DODGE CARAVAN (1998 - 2000)
DODGE NEON (1998 - 1999)
DODGE STRATUS (1998 - 2000)
Another alternative for the stock 99-up 4.0L is the (22.8#=240cc @ 43.5psi) Ford XR3Z 9F593 A4B / XR3E 9F593 A4B which is the newest design and offer even better performance.
(MOTORCRAFT #CM-4956,CM4956 XR3Z9F593AB, XR3Z-9F593-AB, XR3E9F593A4B, XR3E-9F593-A4B, YR3Z9F593AB, YR3Z-9F593-AB=all the same injector)
This injector has a single hole and looks disappointingly similar to the stock 99-'01 injector .
The main method for increasing atomization in the ev6 injectors was by increasing holes number and reducing each hole size. One can't add holes and reduce size indefinitely, so a new approach was needed when regulations became more strict.
The newer design is not relying on number of holes, it's a completely different approach with the difference in the internal orifice which allows far better atomization. This also gives an even better ability to work on variable pressure, as with most newer cars the pressure is computer controlled.
This, in turn, gives more accurate fuel mixture at any given pressure.
You can check the two in your fuel rail, when out, and compare the spray pattern, with the newer the fuel is like a mist.
Currently these can be bought near new for around $60 a set on ebay.
If even more flow is required the “1999 only” Taurus/Sable injectors, 0280155849 can be used.
This EV6 injector will flow 265cc/min @ 43.5 PSI, same as the FMS M9593-A302(24 lb) but with USCAR connector so the original injector clips on the loom will plug straight on..
CF Veteran
Joined: Jan 2009
Posts: 1,964
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From: Baltimore, Maryland
Year: 1994 1993
Model: Cherokee
Engine: 4.0
Member
Joined: Jun 2009
Posts: 150
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Model: Cherokee
hence I am a infrequent visitor.
stay well.
