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OK, I'm confused now after reading through this thread. I recently bought an '07 new, and it has VIN 289***. It seems to have the '07 ECU (makes fax machine noises after shutoff), but it has the O2 sensor threaded in next to the oil filter. Is this an '06 or '07 exhaust? It has the big bulky heat shield at the back where it splits back into 2 pipes, like the '08s, but I don't know if the earlier years had that, too. Just trying to figure out which model year exhaust to order from.
Will the Arrow 3-1 full system work on all model years? Which O2 sensor location is the bung welded for on that system? Thanks for the help.
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