OE Vs. Denso O2 Differences

[Tractionless1]

I found the differences in the "sniffer" between OE and my Denso replacements today interesting. Looks like the Denso's will pick up much more exhaust than the OE's. Went with them as my tuner suggested a change after seeing my trims and because they are said to be lead safe.

 

[FiveOhJoe]

I actually just replaced the O2 sensors on my girlfriends Lexus ES300 and noticed the same thing. The OE sensors were Denso and the ones I used were Bosch. No clue what the differences are really.

 

[Tractionless1]

FYI the Denso's above are said to be lead safe.