car engine sputter sound when gassing, would sum input

[thebuzz42]

let me start by saying im new the this forum, never been in a forum group so i dont know where to post.
tht being said i tryed to run the car today and when giving it gas engine sputters thought it might be sc tensioner but it seems fine

(3.6 pulley, intake, no tune) also could this have something to do with in
and bad cat for bout 4 months

vid of sound
https://www.youtube.com/watch?v=rTK-3RdJeGw

 

[Fivefingerdeathpunch]

Sputters as is doesnt want to go?

I'd say you have some misfires going on. Maybe pull some plugs and make sure they are all still there. 3.6 with no flow mods a GEN V is kinda asking for trouble.

 

[thebuzz42]

now idk if i would call it an "engine sputter" i would like to think its tensioner. i am also running stock belt.

here is another vid inside engine compartment, shot when doing vid above
https://www.youtube.com/watch?v=OZ6u8OzWUw8

and another vid with belt off
https://www.youtube.com/watch?v=kKuIaPny8ZI

sounds fine with sc belt off. i think
also i cant find a vid of a bad gtp sc tensioner

flow mod as in down pipe?
i ordered a 3" exhaust from zzp down pipe back just waiting for that than i was gonna get it tuned