I'm planning on gutting the precats this weekend while I wait for my turbos to be returned from Midwest Turbo Connection. I have searched and found conflicting info on how to prevent a CEL. Can I just use spacers on the front O2s or do I have to relocate or have them coded out? I have an APR tune so coding them out would require me to send in my ECU. So spacers would be the best choice if that will work.

As as always, thanks for the great advice fellas.