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99 Injector Uprade FYI....

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Old May 9, 2011 | 05:03 PM
  #1  
Crow Horse's Avatar
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From: Masonville, NY
Year: 1999
Model: Cherokee
Default 99 Injector Uprade FYI....

I recently upgraded the injectors on my 99 with ones from Precision Injectors. I've had them in for several weeks now and I'm happy to report a solid 2 mpg increase. The motor runs much smoother, is very responsive and requires less throttle input. Best mileage so far is 21.69 mpg's while fully loaded with luggage/tools and a passenger. I'm a happy camper........
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Old May 9, 2011 | 07:34 PM
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From: Apollo, PA
Year: 1996
Model: Cherokee
Engine: 4.0
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Very nice. Thanks for the input. I have been thinking of swapping mine out here very soon. Good to know your happy with yours. Let us know if it gets any better.

Sent from my DROID INCREDIBLE using Cherokee Forum
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Old May 9, 2011 | 07:36 PM
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Texas XJeeper's Avatar
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From: TX
Year: 2001
Model: Cherokee
Engine: 4.0
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Nice mpg's I get 9.73 mpg. LOL I think I need to keep my foot out of it.
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Old May 9, 2011 | 07:41 PM
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From: Apollo, PA
Year: 1996
Model: Cherokee
Engine: 4.0
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Haha sweet. Ya its amazing how much gas you can save just driving easy. I have a 93 geo metro so I beat that up a lot....still get 45 mpgs while red lining it light to light. Mind you its not fast by any means bits it fun!

Sent from my DROID INCREDIBLE using Cherokee Forum
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Old May 9, 2011 | 08:14 PM
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From: Missouri
Year: 1998
Model: Cherokee
Engine: I6 4.0 L
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What size tires?
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Old May 9, 2011 | 08:26 PM
  #6  
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From: North Carolina
Year: 1999
Model: Cherokee
Engine: Gas
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Part number?
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Old May 9, 2011 | 11:11 PM
  #7  
spauldo8426's Avatar
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Model: Cherokee
Default injectors

Do they make those for a 96? I am thinking about upgrading since these have been in there since well......96.
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Old May 10, 2011 | 12:55 AM
  #8  
liftedjeepxj's Avatar
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From: Las Vegas, NV
Year: 1999
Model: Cherokee
Engine: 4.0L
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I also have a 99. 5 inches of lift with 32x11.50 r15 tires. The swap took about a half out to install with new o rings from a local parts store. 10mpg to 10.9 mpg. Cheap upgrade with a decent boost of mpg.

Highly recommended

I wish i had 21 mpg like the orig post :P
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Old May 10, 2011 | 09:08 PM
  #9  
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Year: 1999
Model: Cherokee
Engine: 4.0
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which part number was installed for the 99?
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Old May 11, 2011 | 06:11 PM
  #10  
Crow Horse's Avatar
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From: Masonville, NY
Year: 1999
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I'm running 235's. I'll check for the part #'s.......
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Old May 12, 2011 | 04:39 PM
  #11  
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Bosch 0280155719 injectors (orange)
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Old May 12, 2011 | 10:20 PM
  #12  
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Thank you for posting the numbers.
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Old May 13, 2011 | 02:18 AM
  #13  
Evilpopcorn's Avatar
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From: Converse, Texas
Year: 1999
Model: Cherokee
Engine: 4.0 I6
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You talking about these? http://www.precisionautoinjectors.co...2&categoryId=3
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Old May 13, 2011 | 02:34 AM
  #14  
Crow Horse's Avatar
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Year: 1999
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Those are the ones.....although they are orange.
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