My car mileage already hit 238k km, and found out FC getting poorer than when at low mileage. Few workshop suggest to do the catalytic converter cleaning but need appointment, pricey, and some even dont give warranty if it will turn back ok as b4 (not sure why). Info, already done Throttle body cleaning by own (DIY) by spray. Yes it clean much even with spray only.

Question, can I remove the catalytic converter but retaining the stock exhaust? This will need remap thingy cz to disable O2 sensor readings? No idea for exhaust

This post has been edited by ayamxxx: Oct 21 2024, 04:28 PM

Yes, but it be more noisy.
If the car have downstream O2 sensor, either disable or use adapter/extender to trick the ecu.

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This post has been edited by alexei: Oct 6 2025, 02:13 PM

Currently owned a x50 ( not facelift model ), may i know whats the best sport exhaust for it, not too loud but just a sporty sound will do