My cat is rattling bad and I kinda want to just delete it and replace the stock muffler with a flowmaster my blazer buddy did it to his 95 but do I need to worry about any sensors or laws his trucks sounds really really good and agressive whats the worst that can happen???

 

On a legal standpoint, every vehicle past 197...4? must be equiped with a catylitic converter. However, I ran my old '83 Camaro z28 with no cat and was it ever nice sounding lol. Worst that can happen for you, is a fine, and being a '99 you're going to get a perma engine light on unless you remove your post-cat 02 sensor, and replace it with a ''dummy" sensor

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I live in nebraska not cali so im gonna assume they wont get after me about it... But whats a dummy sensor something I need to make or buy because I dont want the SES light on all the time since I spent 2 months chasing problems down and finally getting it off in Jan. this year what are you running on yours??? will this give me a little power boost or just a better sounding exhaust???

 

You can find the 02 sensors online from what I hear. Removing your cat will increase flow through your exhaust, therefore giving a slight increase in power. Cats arnt like they used to be though, they are very efficiant these days and don't really rob much power like they did in the 70's-80's
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Or you can make a dummy using a couple of spark plug non foulers. I forgot the part number but you basically screw the two onto the o2 sensor and then put the sensor back in the bung. It raises the sensor up out of the flow. There should be a write up on it somewhere.

 

If you read the Forum Rules you will learn that we do not discuss removing a catalytic converter since it is against Federal law.

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