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Old 10-27-2013, 03:28 PM   #1
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Should i get all new injectors?

Sorry, me again. I have a 2000 gt with 188000 miles give or take. Had it from showroom floor till now. My question is should I replace all my injectors? I've read that the 19lb ones were replaced with 21lb injectors. If I do this should I get the 21's? Would I need a tune for them to work properly? Car is well maintained. I just never had a problem with the injectors. Got some bad gas a week ago. One injector got clogged. Changed fuel filter and drained tank put in 93 and ran it hard on the hwy. the injector is unstuck and the car runs fine now. Thanks for the I put all.
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Old 10-27-2013, 03:45 PM   #2
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Do you have any other mods done to the car?
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Old 10-27-2013, 06:10 PM   #3
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No all stock
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Old 10-27-2013, 06:22 PM   #4
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Sorry, me again. I have a 2000 gt with 188000 miles give or take. Had it from showroom floor till now. My question is should I replace all my injectors? I've read that the 19lb ones were replaced with 21lb injectors. If I do this should I get the 21's? Would I need a tune for them to work properly? Car is well maintained. I just never had a problem with the injectors. Got some bad gas a week ago. One injector got clogged. Changed fuel filter and drained tank put in 93 and ran it hard on the hwy. the injector is unstuck and the car runs fine now. Thanks for the I put all.
Someone will correct me if I'm wrong, but I have to think increasing fuel-flow will require a tune. Honestly, if your current injectors are holding up, I wouldn't be in a rush to replace them. And, if I did replace them, unless I was upgrading other parts that require more fuel-flow, I'd replace with exactly what is installed now.

But, that's just me. I tend to be conservative about upgrading stuff like that. If it isn't needed or required, I'd leave it be.
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Old 10-27-2013, 06:23 PM   #5
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Someone will correct me if I'm wrong, but I have to think increasing fuel-flow will require a tune. Honestly, if your current injectors are holding up, I wouldn't be in a rush to replace them. And, if I did replace them, unless I was upgrading other parts that require more fuel-flow, I'd replace with exactly what is installed now. But, that's just me. I tend to be conservative about upgrading stuff like that. If it isn't needed or required, I'd leave it be.
Next to sure upgrading to the 21lb injectors requires a tune, not worth it without the tune..but I hear the tune + the upgraded injectors will make a nice improvement.
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Old 10-27-2013, 06:28 PM   #6
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Ford didn't retune for the 21s. That being said they do run quite rich at WOT
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Old 10-27-2013, 06:41 PM   #7
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Old 10-27-2013, 06:53 PM   #8
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Would a tune make any difference in a 188000 mile gt auto? And it's all stock
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Old 10-27-2013, 06:55 PM   #9
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Would a tune make any difference in a 188000 mile gt auto? And it's all stock
A good tune over stock will always make a difference
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Old 10-27-2013, 07:13 PM   #10
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Yes, stock tune sucks
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Old 10-27-2013, 09:18 PM   #11
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So I should replace the injectors with factory 19lb and get a bama tune
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Old 10-27-2013, 09:57 PM   #12
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I'd replace with 21s and get a tune. Ford did not re-tune for the 21s in 2001, they just let them run rich which all 01-04s do. I say replace with 21s because even on the stock tune the 19s are running at 90% duty.
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Old 10-27-2013, 10:58 PM   #13
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Would a tune make any difference in a 188000 mile gt auto? And it's all stock
I have an auto gt with almost the same miles lol. A tune will make a big difference. Stock my car shifted really crappy and a tune fixed that right up.

If I were to need new injectors, I would get 42#, and tune for it. But that's because I'm more than likely gonna go supercharged in the future, and that's one of the supporting mods
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Old 10-27-2013, 11:21 PM   #14
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Actually now that I think about it, I would go with 60# lol
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Old 10-27-2013, 11:37 PM   #15
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36lb are fine even if you boost up to 500hp.
Since you're all stock id just get the 21 and tune anyway.
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Old 10-28-2013, 12:01 AM   #16
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I wouldn't recommend those 42 or even 60 like he said 36 will handle
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Old 10-28-2013, 08:33 AM   #17
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Terminators came with 39s and those support all the ported Eaton setups just fine.
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Old 10-28-2013, 09:55 AM   #18
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Quote:
Originally Posted by scottydsntknow
Terminators came with 39s and those support all the ported Eaton setups just fine.
Eh...sorta. I topped my factory injectors around 470whp. You will need bigger fuel pumps to support anything close to 39# injectors.
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Old 10-28-2013, 10:08 AM   #19
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Sorry to thread jack but can I just use my tuner to run 36lbs injectors on my bolt on Bullitt for now ... I'm gonna supercharge after I graduate
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Old 10-28-2013, 10:51 AM   #20
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Sorry to thread jack but can I just use my tuner to run 36lbs injectors on my bolt on Bullitt for now ... I'm gonna supercharge after I graduate
Bama only tunes to 24#s I believe..but you could probably do it yourself if you have the knowledge. (If you have a bama tuner)
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Old 10-28-2013, 01:37 PM   #21
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Sorry to thread jack but can I just use my tuner to run 36lbs injectors on my bolt on Bullitt for now ... I'm gonna supercharge after I graduate
Your Bullit should have 21s. That'll support all the bolt ons just fine. I wouldn't worry about upgrading them until you actually need to. Just get a good tune for now and roll.
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Old 10-28-2013, 01:42 PM   #22
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Your Bullit should have 21s. That'll support all the bolt ons just fine. I wouldn't worry about upgrading them until you actually need to. Just get a good tune for now and roll.
He did get an engine that needed some work. Who knows, they might not have stock injectors.... 2300, if they have pink on them then they are factory 21s
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Old 10-28-2013, 01:43 PM   #23
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Pink=21s, orange=19s. My 99 engine still has orange...
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Old 10-28-2013, 01:49 PM   #24
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There 19s I thought that they started the 21s in 2002
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Old 10-28-2013, 01:50 PM   #25
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Early 01s used the 99/00 drivetrain, 01.5-up used the updated stuff.
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Old 10-28-2013, 03:45 PM   #26
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Early 01s used the 99/00 drivetrain, 01.5-up used the updated stuff.
I believe 2100turboford is correct, I have an 02, with the 19lb injectors, but with the updated aluminum crossover and the 3650 trans
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Old 10-28-2013, 03:56 PM   #27
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I believe 2100turboford is correct, I have an 02, with the 19lb injectors, but with the updated aluminum crossover and the 3650 trans
Woah you have a mutt..
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Old 10-28-2013, 04:32 PM   #28
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Woah you have a mutt..
That's how they are...unless I'm wrong which if I remember when I checked all this out, they switched to the 3650 in Mid 01, switched to the aluminum crossover for all 02s and up, and switched from the 19lb injectors to the 21lb injectors in mid to late 02 models and up....if you have a late built 02 than you have the 21lb(pink) injectors, if an early build like mine (Jan 02) than you will have the 19lb(orange) injectors...the 21s are not needed without a tune, but a tune+21s are a nice have.
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Old 10-28-2013, 07:40 PM   #29
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All of the Bullitts came with 19lb injectors from the factory.
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Old 10-28-2013, 07:41 PM   #30
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All of the Bullitts came with 19lb injectors from the factory.
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Old 10-28-2013, 07:52 PM   #31
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Hmmm I've seen a few with pink injectors. Bullitts i mean. Owner probably just swapped them. Meh. IMO if you are going to get a tune burnt get 24s if staying na.
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Old 10-28-2013, 08:18 PM   #32
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I've never seen one that didn't have 19's, BUT, to be honest, I haven't seen the engines of a great number of Bullitts.
It's my understanding that all of the cars are identical except for paint color and there are a few that were ordered without the Mach 460. (Those are the "real" rare cars).
Bullitt 1075's car is 19lb. My car (3393) has 19lb. It sounds like 2300's car is 19lb.

Now, if we could get SL4 to take a look at his fuel injectors and tell us what color that they are, when he gets a chance, I think this can be settled as Soccerluvr's car was one of the very last to be built...
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Old 10-28-2013, 08:27 PM   #33
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I've never seen one that didn't have 19's, BUT, to be honest, I haven't seen the engines of a great number of Bullitts. It's my understanding that all of the cars are identical except for paint color and there are a few that were ordered without the Mach 460. (Those are the "real" rare cars). Bullitt 1075's car is 19lb. My car (3393) has 19lb. It sounds like 2300's car is 19lb. Now, if we could get SL4 to take a look at his fuel injectors and tell us what color that they are, when he gets a chance, I think this can be settled as Soccerluvr's car was one of the very last to be built...
I guess I could check some time... How hard is it? Never done it before.
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Old 10-28-2013, 08:56 PM   #34
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I guess I could check some time... How hard is it? Never done it before.
It's easy. They are the round things underneath the chrome fuel rails. They have a wire connector plugged into them and the top half will be either orange or pink. They are next to the coils.
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Old 10-28-2013, 09:18 PM   #35
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Sorry, me again. I have a 2000 gt with 188000 miles give or take. Had it from showroom floor till now. My question is should I replace all my injectors? I've read that the 19lb ones were replaced with 21lb injectors. If I do this should I get the 21's? Would I need a tune for them to work properly? Car is well maintained. I just never had a problem with the injectors. Got some bad gas a week ago. One injector got clogged. Changed fuel filter and drained tank put in 93 and ran it hard on the hwy. the injector is unstuck and the car runs fine now. Thanks for the I put all.
Coincidentally, I also own a 2000 GT--bought showroom new; well maintained and has 263,000 kilometers. My car is currently bone stock but I have a few bolt ons that I still need to add to the car. My suggestion--if you plan to stay stock--is to send your injectors to RC Engineering. They can blueprint and certify them for flow and performance. All work is guaranteed. There are a couple benefits to this option. 1) you get to keep the stock part on the car 2) this will not require a tune 3) if the car is stock, it makes no sense in spending the $$$ on an injector upgrade especially since you may need to increase fuel flow with a regulator or maybe even a fuel pump ( depending on injector size etc etc).

In short, keep your stock injectors but have them blueprinted and balanced.
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