P0420 P0430 Catalytic Converter Cleaner Kit — 3-Step Fix: Fuel Additive + Foam Spray + Engine Flush | Pass Emissions & Clear Check Engine Light

Excelente

Fixed p0420 enough to smog it then code came back the next time the catalysts monitor ran

I had a P0430 code so I used this cleaner and replaced the downstream o2 sensor. Driven it only a few miles but so far so good

The hardest part of all this was getting access to the upstream air/fuel ratio sensor. I loosened it before I ran the engine to heat up the catalytic converter since removing the sensor requires you reach over the hot exhaust manifold. After running the engine and removing the sensor, it was fairly straight forward. Insert the tube into port until it hits the converter element. Then start injecting the foam while moving the tube around to ensure good coverage. Since everything is hot when doing this, where gloves and anything other protection needed to avoid burning yourself. After injecting the entire can, I installed a new upstream sensor and ran the engine. It blew gray smoke from the exhaust for about the first thirty minutes of engine operation, clearing all the carbon that was removed from the converter element. I continued to get the P0420 code over and over and decided to replace the downstream oxygen sensor, thinking that it probably got fouled when I flushed the converter. After replacing it, I have not gotten the code since, with many miles driven. The engine seems much happier now and have seen an increase in fuel mileage. I would say overall, it did what it was advertised to do. So far, very happy with the results.

I did exactly what the instructions told, but the light is still on .i. Also changed both o2 sensors but no luck .now the idiot light comes back even faster that before I put the cleaner , this is totally garbage because the inside mesh is still intact just needs a good cleaning.

Top German science ! This stuff REALLY works !!! Amazing amount of crap burned off out of my converter, and it passed emissions to get my "sticker" no problem. I re-ordered to have on hand in my garage. REALLY let it it soak in ( longer than directions ), and run a long time to heat converter up, and totally burn it all off

Fast shipping and as described

ok