What are you base pressures at?
10-13-2005, 01:21 AM
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What are you base pressures at? I noticed mine today were at 90 under the "Peformance" Column in efi live. Is this stock? My friend gave me his tune with different shift tables and his is at 96. Is this good/bad or what? Should I just leave them alone? And yes Ive read the line pressure sticky at the top. Thanks
Brian
Brian
10-13-2005, 03:57 PM
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The "Performance" table on F-bodies is only a cruel
hoax. Though I gather EFILive has some deal where
you can add a wire to the PCM connector and a
custom OS will make all kind of magic stuff possible.
Anyway, this is not a pressure, it's a commanded
percentage of the mechanical-regulated line (which
you have no control of from the console). More can
be had. 100% is all you get. Usually people stay back
at 95% or so.
The Force Motor Current table changes this commanded
line % to a force motor current, and you can transform
that current to a rough idea of actual line using the info
in the HPTuners 'board A4 Tuning section stickies if you
have the need.
Basically if it don't slip, you don't need more line pressure.
Look at your shift events for signs of slip, by input and
output shaft speed logging and Excel plotting of the ratio.
If it grabs and settles in a couple of frames, you're OK.
If it takes too long you probably want to change the
params. It's more efficient to run as little as you need.
hoax. Though I gather EFILive has some deal where
you can add a wire to the PCM connector and a
custom OS will make all kind of magic stuff possible.
Anyway, this is not a pressure, it's a commanded
percentage of the mechanical-regulated line (which
you have no control of from the console). More can
be had. 100% is all you get. Usually people stay back
at 95% or so.
The Force Motor Current table changes this commanded
line % to a force motor current, and you can transform
that current to a rough idea of actual line using the info
in the HPTuners 'board A4 Tuning section stickies if you
have the need.
Basically if it don't slip, you don't need more line pressure.
Look at your shift events for signs of slip, by input and
output shaft speed logging and Excel plotting of the ratio.
If it grabs and settles in a couple of frames, you're OK.
If it takes too long you probably want to change the
params. It's more efficient to run as little as you need.