OK so my muffler fell off and all I have is the cat my question is is this gonna hurt my motor only running the cat?

 

I ran with no muffler for a bit, the only thing I noted was my gas mileage went down a bit.

 

Only thing u'll hurt is yours, and others, ear drums. All things being equal, mpg should increase slightly.....the right foot is the biggest factor so all things being equal is probably out the door. LOL

Might need to at least run a piece of pipe after the cat to direct exhaust fumes from the underside.

 

Nope won't hurt the motor but depending on local law you could get pulled over for either noise or exhaust not exiting the rear or side properly. I wouldn't leave it idling for very long with the windows closed lol

 

thanks guys lol its been like that for awhile no cops and i ran my old honda with no cat and headers and they dident do a thing to me but could you guys help me out im trying to get it to back cackle so what should i put on it and i mean the jeep

 

You may like a Flowmaster 10 with high-flow cat. Try this thread https://www.cherokeeforum.com/f67/al...o-here-103854/

 

^Aww you gave a plug to my thread