After first cats delete, check engine light came to me. Trying to install many o2 fix spacers, but check engine returned.
Anybody help, how to kill check engine light?!

 

Are you sure the cell is just for the cats being deleted?

 

Where have you been using the spacers? I've read that they should be placed on the downstream sensors rather than the ones on the exhaust manifolds, though don't quote me on that as it hasn't been confirmed to work.

Your best bet is to install an O2 conditioner from Sikky. This has been done before and is claimed to be a fix.

Good luck!

 

as was mentioned numerous times in the cat delete thread... you require a O2 conditioner from sikky or PPE