I'm tuning my car with Crome and I run an inverter for my laptop. When the car is at idle around 800 RPMs, the alternator cannot keep up with the load. I do not have this problem when not running the inverter. The voltage will continue to drop if I don't do anything about it. If I throttle up to about 1200 RPMs, everything is fine. Is there any way to tell the ECU to idle at 1200 RPMs under higher electrical load?

FYI, the inverter is connected directly to the battery with a large enough wire. Undersized wire is NOT causing my voltage drop.

 

Nobody knows anything about this? I'm sure plenty of tuners on here are running inverters in their cars. What do you do?

 

Is ELD enabled or disabled?
What voltage is your alternator making without the inverter plugged in at an idle?
Is your battery located in the engine bay or is it remotely mounted?

What engine management do you have?

 

He said Crome. As far as I know, the eld disable option doesn't work in crome. Its never worked for me anyway.

OP, have you tuned the battery offsets? Perhaps some better grounds will help.

 

Disable ELD is unchecked because I don't know what it does. Voltage is fine when the inverter is not plugged in. Battery is in stock position.

How do I tune the battery offsets? What does that mean anyways?

 

Since you are using Crome, you cannot disable alternator control, which is what I would suggest to do.

So cut or de-pin every wire going to the plug on the alternator except for the Yellow/Black wire and that will do the same thing.

This will put the alternator in high charge mode and should keep your alternator outputting 14v all the time and not switching between hi/lo

 

Are there any bad side effects I should worry about?

 

What about using the Option Byte Hack plugin and then disable ELD?

 

Im not really certain why OEMs do it this way...probably to make the alternator work less when it doesnt actually need to be working that hard. So maybe a shorter life of your alternator...but thats all I could guess.