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1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

Injector upgrade

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Old Jan 14, 2011 | 11:28 AM
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Shoe's Avatar
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From: Bedford
Default Injector upgrade
If i upgrade to bigger injectors, how bad will it kill fuel millage?
 
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Old Jan 14, 2011 | 12:29 PM
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901stgen's Avatar
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As long as you keep your foot out of it, little to none!
 
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Old Jan 14, 2011 | 04:00 PM
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Depending on how wild you go most of the time after the excitment wears off you will actually see better mileage.
 
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Old Jan 14, 2011 | 04:34 PM
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yeah new injectors should help your milage if yours are 20 years old. just keep your foot out of it.
 
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Old Jan 23, 2011 | 09:19 PM
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As long as you have adequate air it will not hurt economy. If you're making tons of smoke that will hurt mpg's.
 
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