lacking power

  1. #1
    i put a bandage on my down pipe 2day because it had a hole in it and now my cars really sluggish and revs really slow after 60k. its a saxo vtr and its been blowin a while. i had a new back box while it was blowin. moneys tight so i got a cheaper back box. i think its the same as the standard one without the tip? could it be for a 1.1 and resricting the gases?