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1. 

   Best Option For Thorley Headers CEL Avoidance?

   Mine goes LT down to flange, then new flange with first O2 shortly after, GESi HO cat, secondary O2. 2.5" pre to 3" post cat. I use 2 90 defoulers downstream and OEM O2s in up and down stream. I sometimes get low codes on long highway runs but never city or wheeling. I just run an OBDII with...

   • Words: 91
   • GXO
   • Post #17
   • Mar 17, 2023
   • Forum: GX470 / Prado120
2. 

   Best Option For Thorley Headers CEL Avoidance?

   LT to HO Gesi with O2s. Works like a peach.

   • Words: 10
   • GXO
   • Post #11
   • Mar 16, 2023
   • Forum: GX470 / Prado120