Gutting cats
10-01-2007, 10:56 PM
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Gutting cats Has anyone here ever gutted their cats? Before anyone goes green on me, I'm just asking the question. Yes, I know it's not legal to not have cats. I understand the LS1 likes a little back pressure. With a good set of Bassani mid-length headers and an open Borla exhaust I figure the cats are the only thing providing back pressure.
10-01-2007, 11:36 PM
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Likes a little backpressure? Not again....
https://ls1tech.com/forums/new-ls1-owners-newbie-tech/786413-losing-power-through-gutted-cats.html
https://ls1tech.com/forums/new-ls1-owners-newbie-tech/786413-losing-power-through-gutted-cats.html
10-01-2007, 11:49 PM
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Originally Posted by JohnnyC
Interesting thread. Johnny, but don't slap your forehead too hard. My comment about backpressure comes from something I read when I purchased my car almost 8 years ago.
The real reason I want to gut, is so I can take advantage of the O2 bung for my FJO wideband. Installation instructions say to place them before the cats. This is not a problem on the passenger side, but the drivers side has no room for a bung before the cat.
The FJO rep tells me the cats will alter my readings. I figure I can gut the cats, place both FJO's behind the cats in the unused O2 bungs and problem solved.
10-03-2007, 08:09 PM
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