I already put it on a diagnostic and replaced the pluggs,map and o2 sensor. I noticed that the drivers side pluggs and o2 sensor was black but the passengers side was not. It has gotten worse the last month it use2 hesitate a little but now it cuts out bad up n down hills. My mpg is 7 and b4 this 18,i also have gas in my oil. Can i cut the cat off on drivers side or will it effect the o2 thats located b4the Y?

 

No. It's illegal and can't be discussed here.
I answered this on your other thread.

 

Temporary not 4ever. Theres 3 cats on there.lol. It seems like the 1 in the back by the muffler would keep the emissions down?

 

That won't affect your problem at all. You're getting gas in your oil and using way too much fuel, you need to check the injectors and plugs on that side to find out why. Find out what's going on with the injectors, and verify the plugs are firing correctly. Then I'd check the compression, and possibly a leak-down test.

 

You can't discuss the removal of a cat. Start another thread that deals with the issue without discussing cat removal.