P0420 fix readings after its on

[juice90]

I just changed the 02 sensors out on my truck, and the S2 was still fluctuating wildly, so my Cat is probably bad. In the mean time, I did the spacer cheat/fix. Readings on the 02s2 are now steady, but at around .7 to .8 volts. Still high, but steady. Just wondering if that's normal or not after doing this cheat?

 

[adsm08]

Yes.7 to .8 means the sensor is in an oxygen rich environment.