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If the catalytic convertor is truly plugged, you wouldn't be able to drive the vehicle, so this makes me wonder about the voracity of your statement. With a plugged cat, the back pressure created behind it will only let you rev the engine to around 1500-2000 rpm. I had to replace a set of heads on a pick-up truck for a guy because he continued to run the ...


3

Exhausts inside the car is not healthy at all. As someone said, perhaps another mechanic should be considered. As to the problem, it sounds like the exhaust pipe is leaking before the catalytic converter. The engine light would likely light up because of this, since the Lambda (Oxygen) sensor in the converter would be receiving less exhausts (and more ...


2

Instead of trying to replace it the way you are suggesting, why not do it a little easier with a V-Flange split coupler. Something like this: (NOTE: This is just an example from Summit Racing You can find them on eBay all day long.) Each side of the split would fit, one on the cat and one on the exhaust pipe. You'd need to weld these in place. They seal ...


2

By removing the baffles you have reduced the amount of restriction and backpressure. This has the effect of making the engine run lean. If you get the carbs tuned so that it's running properly, it should run as well as it did before you performed the baffle-ectamy. With a free-er flowing exhaust it may even run better. But that's only if the original ...



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