Cats are working properly, as if it was a factory installation. No CEL and recently passed Smog in WA state, with the OBDII plug. I will investigate but I don't see why it wouldn't.
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Gone (2006 STI, 2008 EVO MR, 1968 Mustang)
AFE Intake/Euro Cats/CSL Headers/Sportline CSL/H&R Springs
1217/1815
!!! BOILER UP !!!
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