Think my next project will be fuel injectors 4 or 12 holes?

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Oct 3, 2019 | 02:22 AM

#16

Ralph77

CF Veteran

Joined: Oct 2015

Posts: 7,517

Likes: 1,626

Year: 2000

Model: Cherokee (XJ)

Quote:

Originally Posted by vroomvroom

I guess I'm alone on this one, but I only see 4 hole injectors as an "upgrade" if your injectors are currently shot(leaking, etc). But if your injectors are shot, any new or refurbished injectors are an upgrade.

I still haven't seen any proof, whether it's a dyno or calculating your mpg on the same route and same conditions.

"It feels faster" doesn't mean much to me. The butt dyno has been wrong before.

Quote:

Originally Posted by BlueRidgeMark

Agreed about the butt dyno, but the proof is on Youtube. It's been dynoed, and I have calculated the fuel economy boost at about 2 MPG for my XJ on my commute route. YMMV.

I agree, though, that it's not enough to justify tossing a perfectly good set of stock injectors. But if they need replacing, I think you are crazy to stick with stock.

My Jeep was bought kind of running not really driveable.
After I sorted through everything and got her punched through emissions
I set my sights on improving MPG.
Now you have to realize I really don't care about MPG. It is what it is. But also figured I would do what I could.
I go on the assumption if I did not replace it then it is original to the Jeep.
So things like injectors, O2 sensors, diff fluid, and the like were replaced.
I justified it thinking all these things had 150K them and just needed to go.