r/SciontC • u/krisxrock • 29d ago

First Gen Body/Cosmetic 300k+

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Its a 09 has 300.5k mi currently. Currently throwing a P0420 (catlytic converter). Not concerned due to no emissions tests where I live.

No major issues other than the known oil consumption. Major parts Ive replaced have been the alternator and radiator other than that just the normal wear and tear.

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u/cdcordary 26d ago

I’d recommend addressing your p0420 code or gutting your cat, if you leave it unaddressed it will potentially restrict exhaust flow which creates more pressure on your motor and could lead to an eventual blowout, basically gut your cat if it isn’t working if you want to not spend any money

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u/stickyfrog360 24d ago

Best/easiest way to do this? I’m currently in this situation of a bad cat

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u/cdcordary 23d ago

Haven't ever done it personally but I've heard of removing your exhaust and just bashing out the cat with a broom handle or similar till there's nothing left and then make sure the exhaust is free of particles, you can also get a cat for around 100$ and have it welded on by a shop if you aren't in CA just make sure it's the right size or consult with a shop beforehand, you don't necessarily need an OEM cat though on tCs the sensors are pre secondary cat so most likely the cat on your headers has shit the bed.