Alternator control no BCM

[l92Firebird]

Has alternator control been added to EFI Live for the e38? I have no BCM and my voltage runs between 11.9 and 13 volts. Loged duty cycle says 26% which corresponds to 12.6v or so.

I searched and it seems that others have asked this in the past with no satisfaction. I saw a post from Taz in past saying it was being worked on. I see HP has a way to control alternator by ECM.

https://forum.efilive.com/showthread...ght=alternator

Thanks

[Taz]

Post your tune ...

If this is an E38 truck tune being used in a custom vehicle, I can patch the alternator control for you.

E38 truck tunes running without a BCM will generally not engage the alternator (i.e. alternator not charging the battery) immediately at start up. Generally, after the engine has been running for about 2 minutes a stock truck tune will then activate the alternator.

[l92Firebird]

I will post tune and log when I get home this evening. Yes it is a truck e38 (escalade).

[l92Firebird]

Here is the tune.

dynotune.ctz

[Taz]

The tune you posted uses OS12608677 - this was not used by 2007 Escalades. It was used by some 2007 2500 series trucks with the 4L80 transmission. The more common OS for these HD trucks was 12618277.

I do not have OS12608677 mapped out - as I have never used it.

Unfortunately, I can't help with this particular OS.

[l92Firebird]

OOps, you are right. The ecu itself is from an escalade. The base tune is from a 2007 truck with a 4l80. I am running a 4l80 (not the 6l80 from an escalade). I assume that that truck ecm tune with 6l90 would not work with a tcu with a 4l80 tune in it, correct?

Thanks for looking into it however.

[Taz]

I had some time this morning, and mapped out OS12608677 ... I have a list of infrequently used OSs to get done when spare time allows (which means I'll never get to them all !).

Attached is the tune you posted, with the alternator control patched.

[l92Firebird]

Thank you so much! Perhaps others can benefit from this tune as finding a 2007 e38/4l80 tune was difficult.

[l92Firebird]

Wanted to provide closure and say worked like a charm!

[ricasas]

Hi,

Bringing up an old tread, has the alternator control been added yet? I am having the same issue as l92Firebird with my swap using a 2007 LY6/6L90. I'd appreciate any help.

Thanks in advance,

Robert