Quote:
Originally Posted by Jeff_in_Oviedo
I used to have a catless dp on my 2002 WRX, and it smelled a little like cat urine. It has been many years now so I can't remember the smell as if I had just smelled it, but do remember how i would describe it. After being cat-less for a few years, I switched over to a catted downpipe, made by Helix. I didn't notice any drop in power, and the smell went away. If you have the money to spend, I would recommend getting the HFC version, you most likely won't notice a significant power difference. I believe somewhere on here the difference is quoted as around 5 hp. When you are putting down 300-400whp, 5 hp here or there isn't really a huge deal, in my opinion.
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Quote:
Originally Posted by nsquared
Never had a catless dp so I wouldn't know either.
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Catless = Stank Nuggets... It really is a strong stinky smell. I've had two cars catless and I didn't like having my kids in the car w/ the door open or windows down when the car was running b/c I could feel them inhaling the polution. Plus its impossible to keep your pipes clean. I agree that it might be a 5hp loss using a hfc instead.