04 6MT Blown ECU???

[chickenwafer]

You really only need to disconnect the battery and let it sit for about 5 min, and touch the positive and negative battery cables together (OFF the battery!) to discharge any store electricity and clear all the sensors and trims.

Install a fresh OEM wideband and you should be good to go. I know it sucks how the factory cross-threads a lot of those widebands, I was luckly in mine came out, but I knew the tech who did my motor swap for me at the dealership

[mazdamaniac]

Originally Posted by chickenwafer

You really only need to disconnect the battery and let it sit for about 5 min, and touch the positive and negative battery cables together (OFF the battery!) to discharge any store electricity and clear all the sensors and trims.

It does take over 20 minutes for the caps in the PCM to discharge and eliminate the NVRAM.
Touching the battery terminals doesn't quite do the same thing as pressing the brake pedal, BTW.

[mecjacob]

Thanks guys. I didn't realize it was wide band when I bought the narrow band. It didn't even cross my mind probably because its rare to hear of a wide band being stock. kinda confusing why it even is. Thanks for all the help...