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Re: Gen V Swap Alternator
old thread, just adding information for others
My stock alternator settings did the same thing. Sometimes the gauge was 13 volts - ish.... others would be below 12 on the gauge... annoying.... then came across some info
HPTuners required
go to
System Tab / General
Fuel System Voltage Min
Set this to the desired Voltage output. In one of my swaps 2006 BMW x5, I have it set to 14v, and it outputs 13.6v. So tweak it as needed
Fuel System Delay : delays the alternator commanded on voltage for however long you set this delay to. I give it 10 seconds, think it was a factory value just so its not loading the engine right on startup.
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1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes
1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit
New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD
A poor man buy's it twice
finally got my domain name back, 87chevy.com.... site rework in progress
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