So…
When driving during the day my wide band will say…13. But if i turn on any kind of electrical load eg…lights, heater, defog or any high current draw, the AFR drops down to say…10, which is way to rich and fucks the tune up. I have a little race battery which is fucked. Maybe thats it. Could it be the voltage regulator? Also i have a power FC. I havent really looked in to this because i said fuck it last fall and wait to spring. Has anybody experienced this before?