To start...a 2011 tC is a 2nd gen. So you're talking 2005-2010.
As for "performance mods" like:
pulleys
intake
exhaust
header
midpipe
chips
etc
etc
etc
Won't net you any noticeable horsepower. COMIBINED you're looking at like 7-10 (and a very loud, hideous-sounding car). And that's not anything that you're going to notice or that is going to matter.
Simply put, if you want the tC to be a "fast car" you'll have to go forced induction like S/C or Turbo.
As for "performance mods" like:
pulleys
intake
exhaust
header
midpipe
chips
etc
etc
etc
Won't net you any noticeable horsepower. COMIBINED you're looking at like 7-10 (and a very loud, hideous-sounding car). And that's not anything that you're going to notice or that is going to matter.
Simply put, if you want the tC to be a "fast car" you'll have to go forced induction like S/C or Turbo.