First question before we get started. While my backfire happens (every time) I lose all lights. Headlights, probably taillights, speedo lights, underfloor blue light etc. Does that mean my backfire is completely an electrical issue? Could it be a bad ground causing all that? I think I can eliminate an exhaust leak because of this right?
So with that question out there, this is what I’ve done so far. It started with an aftermarket exhaust. Backfired like crazy. Installed a power commander and it helped for a few months. Because it was good for a few months and then started up again makes me think it’s unrelated. Anyways, replaced the air filter. And replaced the fuel injector plug wires on the passenger side.
Other ideas I have are the exhaust spark arrestors and new spark plugs. I did inspect the spark plugs and they look fine. But I am not convinced these ideas will help because of the electrical issues previously stated.
Thanks for the help guys
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