Can I take off the Catalytic Converter on my 1990 dodge d150?

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Chris S

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i have a 1990 dodge d150 (V8 5.2 litre engine) and i recently put on a thrush glass pack and noticed its not loud at all. it sounds exactly what it did with the stock muffler. so i was wondering if i could take off the catalytic converter because it seems to be very restrictive. the only thing is that there's a little black sensor on the left side of it and i guess that's the o2 sensor. its a carborated engine so does it need the sensor and the cat??? im really dieing to take off the cat to make it louder and actually sound like a v8. thanks everyone!!!!
 
Zeke's right, in most states, (probably all of them now) if you remove the catalytic converter, your truck won't pass inspection. If you live in some country with no rules, it might be OK.

I don't think the converter really deadens the sound much anyway, I had a Dodge truck with that same engine (but with multi-port fuel injection), and I can tell you, that when the muffler was worn out, it sounded absolutely deafening! You might try looking through one of those aftermarket car part cataloges; they usually have the "barely street legal" mufflers specifically to make engines sound loud and powerful.
 
The catalytic converter is very restrictive on the older trucks and cars, and yours is probably due for replacement because of the age. You can remove it and replace with straight pipe, but yes, it will be illegal. A new high flow converter will keep you legal and will make the truck much louder. These are around $100 for a universal cat.

You don't have a O2 sensor after the converter,so the computer will not know that it is gone. You need the sensor for the computer to function right. The carb and distributor are computer controlled.

You can remove the converter and hollow it out with a hammer and a long punch or length of rebar. Weld it back on and it will pass a visual inspection, and be quite loud.
 
Yep,i would but if you live in a state that inspects vehicles it wont pass though. As for the o2 sensor, i think theres a fuse for that. Good luck. Nice truck btw, I have a 02 ram ext with a 8in lift and love it!
 
you can do it but you will have to buy a kit that tricks you o2 senor to read correctly a muffler shop should know where to purchase it also you will not pass a emission test
 
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