12 hole fuel injector upgrade
06-13-2017, 11:48 AM
#1
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Year: 1995
Model: Cherokee
Engine: 4.0
12 hole fuel injector upgrade
I haven't found any topics or discussions on this so I thought I would bring it up here. I know the 4 hole injector upgrade is the accepted standard but, I'm looking to see if the 12 hole fuel injectors would offer better performance and fuel economy. I'm looking to upgrade my intake manifold to the newer style ones in the near future, so I figured it would be wise to upgrade the fuel injectors to accompany the install.
06-13-2017, 01:15 PM
#2
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Year: 2000
Model: Cherokee
Engine: 6 cylinder
The more holes the better? 
There's a point of diminishing returns with most everything in life probably including 4.0 fuel injector upgrades.
I did notice a little better low end torque and no more bogging off the line when i went from stock 1 holers to 4 holers.
Far as better gas mileage? Same 'ol same 'ol gas hog.
There's a point of diminishing returns with most everything in life probably including 4.0 fuel injector upgrades.
I did notice a little better low end torque and no more bogging off the line when i went from stock 1 holers to 4 holers.
Far as better gas mileage? Same 'ol same 'ol gas hog.
06-15-2017, 02:06 PM
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Year: 1995
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06-15-2017, 06:17 PM
#7
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Year: '98
Engine: 4.0 I6
I just got smoother idle, no change in throttle response or gas mileage.
Still worth it though, better atomization of the fuel is always a good thing but I do agree with the diminishing returns notion.
Still worth it though, better atomization of the fuel is always a good thing but I do agree with the diminishing returns notion.