air filter replacement
10 December 2002, 03:59 PM
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Just passed the 1000 mark on my PPP'ed WRX and I'm pretty impressed - wondered if I should replace the standard air filter for a replacement panel filter from K&N or Pipercross. Don't want to go to the trouble/warranty risks of an induction kit but wonder if I will notice any difference just replacing the standard unit?
Also, would a de-cat invalidate my warranty? It's just that the car seems a little sluggish under 3.5 rpm (although its still quite tight).
thx
Also, would a de-cat invalidate my warranty? It's just that the car seems a little sluggish under 3.5 rpm (although its still quite tight).
thx
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