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Thinking about servicing/upgrading my fuel injectors

h0wl0ngcanitbe

h0wl0ngcanitbe

Lifer
So I ive read up on this procedure and looks simple enough. I hear enough of the guys on here talk about "60# fuel injectors" and what not.

Ive got 175k on my ride and figured it was time to do this service anyways and saw this video and was pretty helpful to help a newb like me understand just how easy it was to do this myself!
Replacing Fuel Injectors In Your Car - YouTube

Anyways, since it seems easy enough to do im gonna give it a go, my question is what direction to go. I was thinking about these from ZZP
Lucas - 42.5# Lucas Injectors #LUC-01D030B-6

From what I understand these would be an upgrade from stock. My build does not consist of a huge HP gain, as always my main goal is Efficiency and MPGs and HP in that order. Would this be the right way to go? And while im at it should I replace the fuel rails as well?

As always your help is greatly appreciated!:)
 


If you are going to stay stock, just send them out and get them serviced. I did mine on both the 98 and 01 and it worked well. I used Mr. Injector in Idaho, $16 per injector gets you a pre-cleaning flow bench report, full ultrasonic cleaning, new internal sock filter, new O rings (top and bottom), new pintle, electrical test and a re-paint or exterior cleaning, all for $16 per injector plus shipping. He also flow-benches the injectors after the cleaning to insure they are balanced and sends a full report so you can see what they were before and that they are balanced now.

You may also be able to find a local guy that can do the same. This is a much better option than buying Chinese injectors off of FleaBay,
 
matt5112 said:
GM ACDelco - 33# GM EV1 Injectors #GM-0280155737-6

These are your stock injectors.

You didn't mention your current mileage or your issues with it.
Click to expand...

Current mileage is 175K and there are no issues that leads me to believe its a problem. Im just trying to be proactive and tackle things as they come up and thought that this could be a service/mod situation.

Burbman said:
If you are going to stay stock, just send them out and get them serviced. I did mine on both the 98 and 01 and it worked well. I used Mr. Injector in Idaho, $16 per injector gets you a pre-cleaning flow bench report, full ultrasonic cleaning, new internal sock filter, new O rings (top and bottom), new pintle, electrical test and a re-paint or exterior cleaning, all for $16 per injector plus shipping. He also flow-benches the injectors after the cleaning to insure they are balanced and sends a full report so you can see what they were before and that they are balanced now.

You may also be able to find a local guy that can do the same. This is a much better option than buying Chinese injectors off of FleaBay,
Click to expand...

Im not sure if these parts come from ebay but I purchase mainly through ZZP
 


That link from Matt are refurb injectors from ZZP. Sounds like you send your old ones back as cores. essentially the same thing, either you buy refurbed from ZZP or send your own out to be refurbed. Difference is ZZP shows a price of $149 on their site, Mr. Injector is $16 x 6 = $96, so you save $53. Here's the report that came back with mine showing the before and after on the 01 GT:

IMAG0208.jpg


This is at 148K miles so definitely some varnish despite using Techron in the fuel tank once a year.
 
I would have to agree, no need to upgrade injector size if your main concerns are efficiency and MPG.
It does not even sound like there is a current problem. I would just drive it.
Sending in the injectors would be nice maintenance though and benefit your fuel efficiency, if you can afford the downtime/have another vehicle.
 
I too was thinking about upgrading except with a set of new 39# cobra injectors. I know a guy who has a set for $150 not sure if I should grab them or not.

Sent using my Galaxy SIII on Tapatalk 2
 


I had the car in for a LIM job, water pump, plugs/wires, some general stuff and I figured while the fuel rail is out I would send the injectors in. The injectors on the 98GT were a little worse but not much with about the same mileage. I'm not sure I would schedule it a separate job, as Matt pointed out the worst one was only at 93% efficiency. Problem is, you don't know until you send them in to be flow benched. Usually you have a drivability issue that prompts this service.

My only point to the OP was that if he had already made up his mind to buy serviced units, that he could send his own in for servicing considerably cheaper.
 
Well this is all good info, Im not looking for a ton of downtime, I do have another vehicle but sounds like my best bet is to stick with what I got. When would replacing the injectors make sense? Here is my final goals with this car.

Headers, Cat back, Open cone, gen V ported and polished, drop pulley (the next step down just enough to make the mods worth it) Tune. And maybe a cam but I have no idea how to do that myself. Im sure I will have to address a few other things also but this is a long ways out
 
It would "make sense" to replace the injectors when they are unable to keep up with fuel delivery, the setup you listed will be just fine with stock injectors.
I've ran stock injectors just fine with a mild (XP) cam & I/C with a big pulley.
It would also "make sense" to replace them if they've failed electrically, that which you would not know without injector testing.
Send them out somewhere reputable.
 


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