i was wondering if anyone has actually tried the four hole injectors and got better fuel mileage if so what is your new mileage and what was your old mileage providing it was the standard 18

I didn't really notice much difference in MPG, but it runs smoother and throttle response is alot better.

X2 didnt see anything in mileage but the other 2 have improved

X3. No mpg gain...was hoping for some though. But better throttle response, better starts, seems to run better all around. After finding the mpgs didn't improve I sort of thought it was a waste. But after driving my XJ for awhile it runs way better. I'm just guessing my old ones were pretty bad. But the four hole injectors are very nice. Cheap but produces results. Real ones.

It is pretty cheap. $55 shipped from x91j. Great deal

i may have to try it for the throttle response sounds like its allowing better usage of the fuel for more cheap horsepower

did it keep the same fuel milage???

x4 (right i'm number 4?)

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I aways thought a better burn would result in better mpg.
If your getting better response then that would mean you don't have to mash the gas much resulting in less fuel burning.
Right?

For me It did.

Yeah it kept it the same for me as well

Yeah thats the idea behind it.

but the only problem people run into is they dont fully clean the injectors inside and out (makes them more expensive) and they wonder why it 'seems worse than before' -one of my friends did that, just swapped 'em in, and wondered why they sucked.. -

Mine were supposed to be clean. Wether they were or not I don't know. They looked brand new when I recieved them. But I cleaned then myself. Then swapped them in. I bet if I drove like a granny then gas mileage would improve. I don't. Nor does my wife. We like the power the XJ has. And we don't mind using it. But mine were cleaned and spray perfect. I have nothing bad to say about buying four hole injectors. Just don't buy them if your trying to improve mpgs. You may or may not improve.

x2 I AGREE with you 100%.

I'm asking 80+shipping for mine or 85shipped (which ever is cheaper) for you. I paid 55 bucks for injectors (have the receipt to show you that) and I have 10 bucks in cleaning supplies and 10 bucks in all new o-rings and filters and caps. So I mean, I'm not trying to rip anyone off or anything when I sell mine. Ya know?

i will have to order some new ones from my parts house i work at a garage and we get super discounts on parts so i get stuff CHEAP