I have a stock 98 Cherokee with 42000 original miles on the block...I want info on swaping my factory injectors for other injectors for better gas mileage...im not concerned about speed or high performance just want better fuel economy....my neighbor says hes using Volvo 740 injectors in his 98 jeep and are exact fit and says he get great gas mileage.......need any and all info that could help me stretch more mpg out of the jeep........thank you im new here

 

https://www.google.com/search?q=jeep...m=122&ie=UTF-8

 

I found this for ya. In this post VVVVV
https://www.cherokeeforum.com/f2/fue...upgrade-34178/

 

the injectors will have 0 effect on your fuel mileage

 

There isn't anything in Volvo 740's that I am aware of that would make a good injector swap for a '98 XJ. They will all fit physically but flow wise they are to far off stock.

 

This is actually incorrect and is the result of a misprint on the Bosch injector data sheet. The 702's are basically the same as the Ford "yellow stick" 710's or Volvo 746's.

 

then what is a good multi port injector I can install on my jeep that will plug right in with no rewire....I was told to shy away from bosch but maybe they are ok...........I need help with this

 

703 injectors

 

x2

 

Well let me ask also about my "99" 4.0 I was just getting ready to buy new injectors for it. What would be the best to order for direct plug & play or are there any multi-ports that are.

I did notice that on that list it was 43psi for those injectors listed and was a higher setting for the stock 99 does this need to be reset, of so how?

 

Did you read any of the responses? This information's already been posted.

 

make sure you get more information than "great" fuel mileage. i have an f750 service truck that gets 4-6 mpg for work, so yes an xj getting 15 is great! But my integra that I drive when i dont need my service truck gets 30-34 mpg, so an xj getting the same 15 mpg would suck. just wanted to throw that out there.
dont expect miracles with the injector swap unless there is something extremely wrong with your stock ones.

 

Does this apply to the 99's as well as the older model?

 

no. For 99 and newer it uses 784 injectors

 

im going with the 703 injectors.....will try over stock sieman injectors.....my jeep gets around 12 mpg and I know it should be getting around 16-17.....ive done everything I can possibly do but mileage still sucks.........also since my jeep is at my winter home in mexico gas down there is well over 4 bucks a gallon which is another bummer....need to get that mileage up somehow...