Efi Live....4l80E....Injector Flow rate....help please!!
05-02-2006, 08:19 PM
#11
Originally Posted by 1slowsilverado
No I didnt see his post. But after further review he may be correct as this is the general thinking. The only thing that throughs me for aloop is the later calibrations are done similair to the injector spreed sheet. Mabey someone else will chime in on this 
99-03 truck use a vac ref pressure reg that adjust pressure to compensate for engine vacuum, so the PCM just uses a single value for the injectors. In 04, they when to a returnless fuel system like the f bodys, so you would need to calculate the different injector flow values with the spread sheets, like the f body guys do.
05-02-2006, 08:50 PM
#12
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Well that would explain alot then. I have an 04 im working on now that has a regulator but the flow rate vs kpa is the same across the board also. I was unaware GM went to a returnless system.
I used to just run the spreed sheet and use the first number across the board, Unitll I convinced myself otherwise. Im getting a headache going through old posts, lol
Anyways thanks for clearing this up for me. I better go fix my chit
I used to just run the spreed sheet and use the first number across the board, Unitll I convinced myself otherwise. Im getting a headache going through old posts, lol
Anyways thanks for clearing this up for me. I better go fix my chit
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