I took off my exhaust today but i messed up one of the bolts at the end of the cat. I got the end part off after the cat, and was wondering if it would harm the motor or anything else since i want to go and get the stud removed and replace since i dont have the tools to do it. So would it hurt anything?

 

if the exaust holds pressure with the bolt that got messed up you should be fine and make sure the exaust dosn't wobble or it could damage you entire exaust

 

i drove my car to the exhaust shop with open downpipe pretty much, the cat was on but hollow. Loud as a mother freaker...but no harm done.

Just dont get on it, boost might go dangerously high.

 

just dont drive your car at WOT keep the boost under 10 psi and you will be ok.

 

When I had my fc, it was na, so open exhaust = more power, no boost creep worries, I took everything off right up to the manifold, then I drove it around, the MONSTER V8 guys would wave at me like syaing "sorry dude, too much power for me" I flamed to the floor and everything, it was nice to feel so respected.