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1995 F350 4x4, 1997 F250HD 4x4 Cali’, 1999 F250HD 4x4
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Discussion Starter #1
I’m going through the injectors on my gf’s truck and I noticed that it has a single shot injector for cylinder 1. Is that how it’s supposed to be? Or should they all be split shot AB injectors like the other 7
 

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They should all be a split shot or single shot. That injector is most likely what someone had on the bench when #1 went bad and they did not want to wait for the right injector. DENNY
 

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The next question is what is the PCM/chip programed for splits or singles? DENNY
 

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The next question is what is the PCM/chip programed for splits or singles? DENNY
It came with 120cc ab code split shots.
the Pcm tune will be for splits
 

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I would just go back to split shots and a regulated fuel return system.
DENNY
 

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1995 F350 4x4, 1997 F250HD 4x4 Cali’, 1999 F250HD 4x4
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Discussion Starter #6
That’s
I would just go back to split shots and a regulated fuel return system.
DENNY
That’s what I was thinking to do as well. So what do you mean by a regulated fuel return system?
 

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1995 F350 4x4, 1997 F250HD 4x4 Cali’, 1999 F250HD 4x4
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Discussion Starter #7
It came with 120cc ab code split shots.
the Pcm tune will be for splits
Same as the early 99’ super duty’s correct? Having one single shot and several splits don’t make much sense
 

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I thought the supers were all AC injectors which have a bit more output. The AB's are pretty good with a chip as I can regularly see 25 lbs boost on low burn setting. Hard to find burns for AB injectors though...


Sent from my moto g(6) using Tapatalk
 

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99.5 and later trucks came with AD injectors. Those could be installed in place of AB's without any tunes. It would give the truck a bit more oomph, as they had a slightly higher fuel capacity. AD's might be a little easier to come by.
 

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In the pre 99 trucks the unused fuel would return from the heads. 99 and up (I believe also the 97 Calif split shots) fuel does not return for the heads it is a dead end system. This was considered to be the cause of Cackle in the 99 and up trucks. Systems that returned the fuel from the heads commonly called regulated return systems. Do a search lots of info.
DENNY
 

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Opps, disregard my advice. DENNY
 
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