Rail vs non rail mounted regulator tuning
01-16-2004, 01:07 AM
#1
Rail vs non rail mounted regulator tuning This is kinda a hybred question but again also a tuning issue. I am doing a swap on a S10 and I am using a 01 PCM with a 01 6 speed program in it. I am having a shop disable the VATS and also change the speedo pulse count with LS1 edit so the truck will run once I get it together. I am going to do a on the rail regulator setup. Does the PCM tune have to be different for this setup or will the single line setup in the PCM work fine. Truck is gonna have a heads and cam setup on it with long tubes and will be retuned later but I just want to get it mostly on it's feet. Any suggestions and I would appreciate it.
01-16-2004, 07:58 PM
#5
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The late PCMs' injector table values embody the standard
fuel system's nominal pressure/flow fade for the rear-mounted
regulator scheme. A rail-mounted regulator might stiffen up the
fuel pressure/flow relative to the original, giving you some
high-end enrichment. This might not be such a terrible thing.
If it is, you can tune it. It would likely be a few-% thing if
even noticeable.
fuel system's nominal pressure/flow fade for the rear-mounted
regulator scheme. A rail-mounted regulator might stiffen up the
fuel pressure/flow relative to the original, giving you some
high-end enrichment. This might not be such a terrible thing.
If it is, you can tune it. It would likely be a few-% thing if
even noticeable.
