Passed Emissions!!
__________Test 1____Test 2_______Test 3
HC_______0.346______0.1889______0.3118
CO_______3.984______4.000_______9.649
CO2______867.6______706.0_______766.5
Nox______9.354______9.256_______3.024
Test 1: no special prep, short wait, idled at 2,000RPM
Test 2: ½ tank premium, two cans red HEET, tires at 50PSI, well warmed up, short wait, idled at 2,000RPM
Test 3: NEW O2 Sensors, ½ tank premium, tires at 50PSI, no HEET, 15 minute wait, idled at 3,000RPM
Tires were 285/75R16 Nitto Terra Graplers.
So, HEET brings down HC and CO2, seems to not affect CO or NOx, and bad O2 sensors affect NOx. As noted before, catalytic converters measured a 100 degree temperature rise so between that and this test they seem to be working fine.
Since I could not find it posted anywhere (here or MUD) ill searchably write bad O2 sensors cause high NOx readings. Lower NOx by getting new O2 sensors. I used Toyota OEM oxygen sensors.
Than you again Robbie for suggesting I test after replacing the O2 sensors and before changing catalytic converters. Heated 4-wire O2 Sensors as we have in our cruisers should have a 60,000 - 100,000 mile life.