How much HP do you loose installing CATS? (i've searched)
#1
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I just installed 2 3" cats on my true dual set-up to be legal, make the car smell alot less and be quiter for my kids (and wife). I was courious if anyone has knowledge as to how much HP you actaully loose. The car has a cam similar to the MS3, heads, FAST 90, etc. THANKS! Car makes 441RWHP with the old ORY setup BTW...
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Im going to be ditching my cats off my kooks in the next week or two.
From what ive noticed with a healthy cam you loose 5-10 with cats. but I guess it depends on the cats aswell.
How bad was the smell? or are you going catted mostly because of noise ??
From what ive noticed with a healthy cam you loose 5-10 with cats. but I guess it depends on the cats aswell.
How bad was the smell? or are you going catted mostly because of noise ??
#6
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The smell was just normal "lawnmower" smelling exhaust. I have a 2 yr old thats in the car with me rather often and another child on the way, so i wanted it to be more family friendly. The sound is for sure a bit deeper with them, and the exhaust smells like a new car would, that goofy "cat" smell. I used normal ceramic stainless steel cats, 400 holes per inch. I have no CFM data on them.
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#8
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At 200 cells on a 1000 HP chevy motor we lost 10 HP. On a 500 HP LS motor we lost nothing. Cats are not what they used to be. They came a long way from the old ones. I use them on all my builds and dont run any mufflers. You loose more HP with mufflers than with cats.
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You may loose a couple of horses up top, but adding cats should give you a little more low RPM grunt again, though.
Helps the TQ #'s a little, IIRC. When I took my cats off it felt like I lost a hair bit of low end.
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