2012+ US/Canadian Civic Si / 2013+ ILX
2 posts • Page 1 of 1
I already know that I need a new alternator since the battery doesn't always charge properly. But is it normal to run rich when the voltage is low? I'm on E85, so normal AFR when idling at 14.5V is 9.7-10. However, when the battery is not charging at idle, and the voltage is around 12.2V, the AFR richens up to 7.5-8. Is it normal to do this, or is there something I should adjust? One thing I can think of is Injector Opening Time. I'm on DW 550cc injectors.