I have thought of doing this Bec I replaced my y pipe almost 4 years ago and it rattles and has holes in it, thinking about gutting it or straight piping it, but idk if i still need to run my downstream O2 sensors
Hi what year is this van please. My Ford E350 2008 superduty xlt 5.4 is smells a bit exhaust and code is reading... P0430 catalyst system efficiency below threshold bank 2. So bank 2 needs to clean but the guy at muffler says i need to know which one is bank 2 so they can clean it.. How hell o know🤷🏿♀️ can you tell me which one is bank 2 or should i just use a catalyst cleaner in the tank. Or a straight pipe like you did. Thks impressive 👏🏾 👌🏾
Bank 2 is the 4 cylinders on the drivers side. www.f150hub.com/maintenance/cylinder-map.html On mine there was the 2 smaller cats one on each side right after the headers then there was one larger main cat after where the 2 pipes run into one. My truck is an 2007. It did not have a 02 sensor after the one big cat, so I was able to just remove the cat with no issue & no tuning. If your 2008 is the same then yah I would just take it out before it plug up. If no emissions testing where your at. I had same code on my truck at one time. Turned out needed drivers side o2 sensor.
Was that whistling noise at the beginning of the video due to the clogged catalytic converter? I have a 2005 F350 with a 5.4 that makes a similar noise, but only under acceleration and is low on power. I suspected transmission pump at first, checked for vacuum leaks and found none. I now suspect a clogged exhaust of some sort. I got it off an insurance auction so I have no info on the history of the truck. You can check out a video of the noise the engine is making in a video I uploaded to my channel.
Not sure. Hard to tell from video. Seems to be running ok, if clogged then would not be blocked fully. There is a vacume line a rear of engine on 5.4l that can split & leak vacume. Could be one of the upper cats near manifold. Can make all kinds different noise. Mine was the lsrger cat farther down the pipe. Nit sure what sounds like if smaller ones plug. Be careful if smaller ones plug, it will raise cylinder temp alot, could lead to an engine failure.
It has 3 cats total. 2 cats, 1 for each side of the exhaust manifolds. O2 sensor before & after those. Then the third larger cat downstream, the one I cut off. Is placed after all o2 sensors. Could be normal, I never had a look at other 5.4l 3v.
if you cut the cats before the o2 sensor then that will cause an issue. This cat I removed when it was plugged is downstream after all the sensors. The truck still has the 2 cats on in the front. The truck ran alot better after removal not worse. Less restriction, breathed better.
If you don't want to put the cats back on you could re-tune or try to fool O2 sensors by taking the sensor out of the exaust flow but still in pipe to so can heat up sensor & give proper reading. Right now is reading the rich un burned exaust & probable trim back fuel. just need to extend nut out with piece pf pipe couple inches. Might work, cheaper than a tuner, could fix issue .Seen done on 4 cylinder imports.
