cyde01

Hi I'm new here, bought a used 92 SC400 and trying to smog it. The car failed smog, I took it to a mechanic and he says I need to change the front 2 O2 sensors, and possibly the rear ones and the cats as well. I have 2 questions:

1. The mechanic told me that even if I buy Denso sensors, they are still not as good as the OEM sensors you get from the dealer. Is this true? What exactly is the difference?

2. He told me that if I have to replace the cats, they have to be OEM bought from the dealer to be legal. But what about all the CARB legal universal units? Are all the CARB legal magnaflow cats not CA legal??? Any help would be much appreciated.

lilsharky

iTrader: (6)

I believe that the dealer uses Denso for their sensors.

cyde01

yeah that's what i thought. so if i buy denso sensors they should be identical to the one's at the dealer right?

lilsharky

iTrader: (6)

not sure if they're identical but will work just fine. i bought my denso from ebay and its been fine for a little over 2 yrs.

GS4_Fiend

iTrader: (22)

Just buy the denso.

cyde01

bought the densos! thx for the input!

xxtoobsxx

iTrader: (4)

Just do what i did...find a friend or a family member in an area in CA where there is no smog and register your car at that address. Problem solved! lol