Engine noise

Oh so you took the cat out? If so that's your hissing noise with the cat out and a pipe in place of it.

 

No all engine..i have a car lift. And the truck came from Michigan so I coated frame but things were a little rusty but not horrible..so put that in play also

 

I put all new rims tires breaks and rotors on it

 

Ya 2k4. I had to have the cat replaced cause it locked up on me. So toyota had me come in and replace it free of charge

 

If your old one was plugged up and they replaced it, then your hearing what it should sound like then.

 

I've NEVER heard of a cat "locking up"....

 

No doubt

 

OP how long have you had the truck?

 

8 months. Meant clogged up not locked up

 

It's more than likely normal to sound like it does now that it's exhausting like it should