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  1. thatlexusguy

    Lexus IS F P0420 CODE \ CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 1)

    Looking for some insight...My check engine light came on the other day and I had the code ran. It is coming up as the P0420. Which I was told was an issue with my catalytic converter. However, I have high Flow Cats on my 2012 ISF. Wondering where I should start looking or what to check...
  2. thatlexusguy

    What’s up everyone? Thatlexusguy here!

    I honestly didn’t know until now that you could make a member page on this form. This is awesome, glad to be a part of such An amazing industry and brand. I drive a 2012 Lexus ISF with Vossen wheels toms racing carbon fiber front lip and rear diffuser on BCBR racing coil overs and swift sport...