AD's or AC's
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Lead Driver
Joined: Sep 2010
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AD's or AC's
Alright folks, here's the dilemma, with my other thread on (pbr f250), lets say I need injectors. Obviously, I can't be down with my truck, time won't allow. With that said, would I be best with what 2 injectors mentioned. I dont/wont run a chip,tuner..etc. Will keep her stock. I know what AD's do since that's what's installed now, but will I benefit from having AC's, while keeping stock? If so, do I need to have my pcm/idm flashed for them injectors?
More Turbo
Joined: May 2016
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POWERSTROKE® INJECTOR CODE DESCRIPTION:
AA:'94-'97 Non-California trucks. They are all 90cc injectors and are single shots.
AB: 97 California, and all Early '99 trucks. Split shot injectors that flow 130cc of fuel.
AC: Came in high torque version of the T444E and didn't come in any Powerstroke. They have the same internals as the AB injectors with the exception of the single shot plunger and barrel and are 160cc.
AD: These are found in all late '99-'03 Powerstroke and T444Es, and are a Split Shot Injector
AE: Long lead AD injector that was used to cure a "cackle" issue, and deliver more fuel to the #8 injector.
Yes you will need enhancements to your PCM Strategy if using other than designed applications. Perhaps a Chip can do this. I don't know.
AA:'94-'97 Non-California trucks. They are all 90cc injectors and are single shots.
AB: 97 California, and all Early '99 trucks. Split shot injectors that flow 130cc of fuel.
AC: Came in high torque version of the T444E and didn't come in any Powerstroke. They have the same internals as the AB injectors with the exception of the single shot plunger and barrel and are 160cc.
AD: These are found in all late '99-'03 Powerstroke and T444Es, and are a Split Shot Injector
AE: Long lead AD injector that was used to cure a "cackle" issue, and deliver more fuel to the #8 injector.
Yes you will need enhancements to your PCM Strategy if using other than designed applications. Perhaps a Chip can do this. I don't know.
Senior User
Joined: Oct 2006
Posts: 223
Likes: 0
From: south cali
I can tell you from first hand experience the following. I went from stock split shots, to Swamps 175/146 single shots, and now New AC 160 single shots. All on stock nozzles.
The Stock injectors i ran STOCK..... No chip.
The Swamps 175's i ran with Hydra Chip/PHP/GearHead Tunes
The New AC's i am running on Hydra /PHP / GearHead Tunes
Out of the 3 sets the one i liked the most is the 175's. I know everybody says go "New", but the set i got from swamps ran stronger, and quieter than my current new AC 160s.
I did call GH and got new updated Tunes for the 160s in case you might be wondering.
While pulling my 10k enclosed trailer up grades the 175s pulled like a beast. I am not saying the 160 dont do the job, but the 175 were so much nicer.
In any case, back to your question. If you go with AC's you will have to have your Pcm flashed, as they are single shots compared to your stock split shot AD's.
If you don't mind the added noise of single shots and adding a chip, or flashing your pcm, then go ACs.
I kinda wish i would have bought New Split shots....
The Stock injectors i ran STOCK..... No chip.
The Swamps 175's i ran with Hydra Chip/PHP/GearHead Tunes
The New AC's i am running on Hydra /PHP / GearHead Tunes
Out of the 3 sets the one i liked the most is the 175's. I know everybody says go "New", but the set i got from swamps ran stronger, and quieter than my current new AC 160s.
I did call GH and got new updated Tunes for the 160s in case you might be wondering.
While pulling my 10k enclosed trailer up grades the 175s pulled like a beast. I am not saying the 160 dont do the job, but the 175 were so much nicer.
In any case, back to your question. If you go with AC's you will have to have your Pcm flashed, as they are single shots compared to your stock split shot AD's.
If you don't mind the added noise of single shots and adding a chip, or flashing your pcm, then go ACs.
I kinda wish i would have bought New Split shots....
Cargo Master
Joined: Mar 2006
Posts: 2,502
Likes: 2
From: Bend Oregon
You can't keep " stock" with AC's.
Having the PCM reflashed with an AC tune is no different than plugging in a tuner with an AC tune. You can get a "stock" hp level AC tune but it pretty much defeats the purpose of installing AC injectors.
If you want stock AD is the only injector that fits in that category.
Having the PCM reflashed with an AC tune is no different than plugging in a tuner with an AC tune. You can get a "stock" hp level AC tune but it pretty much defeats the purpose of installing AC injectors.
If you want stock AD is the only injector that fits in that category.
Hotshot
Joined: Mar 2014
Posts: 10,750
Likes: 1,065
From: Douglassville, PA
I do have new injectors at some time in my not too distant future so this topic is of much interest to me. UcaN, you first stated that you loved your single shot 175/146 injectors then went on to say that you wish you had gone with new split shots. Why the conflict there?
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Lead Driver
Joined: Sep 2010
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Good call walleye... With more thinking about it, think I'll stick with rosewood "premium" AD's (no disrespect Clay). Never, I may do the idm mod(diode). That could help sum. In meantime, next few days that is, when clutch arrives, is to install new clutch and uppipes thats been collecting dust for 4yrs. Then when injectors come in, install them and check compression(even though I can't do much if #'s are low, until after mammoth trip)... Thanks guys
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Senior User
Joined: Oct 2006
Posts: 223
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From: south cali
Only reason i wish i would have gone with split shots is for a quieter engine..... To some it's not a big deal. Initially to me it wasn't either, but now the louder injector noise is getting old. Power wise, i noticed a big gain with singles and a chip. I never ran my split shots with a Chip, so i can't really compare Tuned singles vs Tuned splits. I don't pull that heavy, so that is why i regret not going with split shots. Maybe the difference between the two is substantial, but i am willing to sacrifice a little bit of power for a quieter engine.
I can say that it runs quieter and stronger on GH tunes compared to PHP. I know Tugly says his runs nice and quiet... but i am sure it is because of his Special Tuning. I would like to try other tunes, but i really don't want to spend the cash right now... on a hit and miss kinda deal. jejejeje.
As is, the truck runs strong...... i just wish it was quieter.
I can say that it runs quieter and stronger on GH tunes compared to PHP. I know Tugly says his runs nice and quiet... but i am sure it is because of his Special Tuning. I would like to try other tunes, but i really don't want to spend the cash right now... on a hit and miss kinda deal. jejejeje.
As is, the truck runs strong...... i just wish it was quieter.
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Laughing Gas
Joined: Nov 2010
Posts: 1,159
Likes: 33
From: Utah
Single shot in a second. Better MPG and performance-if you're willing to send the PCM in for reprogramming. If not, AD is all you can run. As to noise, my new injectors are quieter than the AD's they replaced (170K miles) FWIW.
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
ACs pop open that can of worms. They have more power, they need some finessing with tuning, and you are walking smack into PMS because of the need for more air to support more fuel.
The safest, least expensive way to go is AD.
ACs can be very loud with the wrong tuning. Hell... the loudest tuning I've ever had was with the stock injectors. My engine is quieter now than it was with a chip on ADs.
The safest, least expensive way to go is AD.
ACs can be very loud with the wrong tuning. Hell... the loudest tuning I've ever had was with the stock injectors. My engine is quieter now than it was with a chip on ADs.
Senior User
Joined: Oct 2006
Posts: 223
Likes: 0
From: south cali
That is exactly my point. To me they are too loud. I was sent a few tunes by GH to try and remedy the situation along with a slightly Higher Idle rpm that is bothersome, but so far they are still too loud. I wish there were someone close to me with the option to Live Tune.
Laughing Gas
Joined: Nov 2010
Posts: 1,159
Likes: 33
From: Utah
I'm running custom PHP tunes. After switching to the single shots, I was scratching my head as to why Ford even bothered with the split shots. The 7.3 is just plain noisy and the difference between the two styles of injector do little to change that IMO.
Senior User
Joined: Oct 2006
Posts: 223
Likes: 0
From: south cali
I'm sure that with the right tuning they can be quieter. But i haven't found that perfect tune.
My dad has a Late 99 running stock AD and there is a world of difference in noise compared to my singles.
On the other hand, there is a world of difference power wise...... jijiji
My dad has a Late 99 running stock AD and there is a world of difference in noise compared to my singles.
On the other hand, there is a world of difference power wise...... jijiji
More Turbo
Joined: Dec 2009
Posts: 661
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I can tell you from first hand experience the following. I went from stock split shots, to Swamps 175/146 single shots, and now New AC 160 single shots. All on stock nozzles.
The Stock injectors i ran STOCK..... No chip.
The Swamps 175's i ran with Hydra Chip/PHP/GearHead Tunes
The New AC's i am running on Hydra /PHP / GearHead Tunes
Out of the 3 sets the one i liked the most is the 175's. I know everybody says go "New", but the set i got from swamps ran stronger, and quieter than my current new AC 160s.
I did call GH and got new updated Tunes for the 160s in case you might be wondering.
While pulling my 10k enclosed trailer up grades the 175s pulled like a beast. I am not saying the 160 dont do the job, but the 175 were so much nicer.
In any case, back to your question. If you go with AC's you will have to have your Pcm flashed, as they are single shots compared to your stock split shot AD's.
If you don't mind the added noise of single shots and adding a chip, or flashing your pcm, then go ACs.
I kinda wish i would have bought New Split shots....
The Stock injectors i ran STOCK..... No chip.
The Swamps 175's i ran with Hydra Chip/PHP/GearHead Tunes
The New AC's i am running on Hydra /PHP / GearHead Tunes
Out of the 3 sets the one i liked the most is the 175's. I know everybody says go "New", but the set i got from swamps ran stronger, and quieter than my current new AC 160s.
I did call GH and got new updated Tunes for the 160s in case you might be wondering.
While pulling my 10k enclosed trailer up grades the 175s pulled like a beast. I am not saying the 160 dont do the job, but the 175 were so much nicer.
In any case, back to your question. If you go with AC's you will have to have your Pcm flashed, as they are single shots compared to your stock split shot AD's.
If you don't mind the added noise of single shots and adding a chip, or flashing your pcm, then go ACs.
I kinda wish i would have bought New Split shots....
Why change from the swamps injectors then ?
I missed why you got rid of them L
Kyle