C6 Cat Elimination
Thread Starter
Intermediate
Joined: May 2006
Posts: 31
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C6 Cat Elimination
I want to pull the cats off my C6. I'm only going to use it this way, off-road, so I want to be able to put them back on, when needed. The car's exhaust will be stock, otherwise. I want it to remain that way.
Questions: (1) Does anyone make a ORP that just elimiates the cats (bolts to the two stock flange ends) or do I need to have this custom made?
(2) Does anyone know of a device/adapter that tricks the computer into thinking the O2 sensors are working properly in this scenario? If you buy an off-road exhaust sustem from Ford Motorsports for a Mustang, they supply an adapter for the O2 sensors that keeps the codes from being thrown. Does Chevy or someone else make one of these for the C6? Thanks.
Questions: (1) Does anyone make a ORP that just elimiates the cats (bolts to the two stock flange ends) or do I need to have this custom made?
(2) Does anyone know of a device/adapter that tricks the computer into thinking the O2 sensors are working properly in this scenario? If you buy an off-road exhaust sustem from Ford Motorsports for a Mustang, they supply an adapter for the O2 sensors that keeps the codes from being thrown. Does Chevy or someone else make one of these for the C6? Thanks.
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
I know there's a company that makes prefabbed 'cat delete' pipes for the GTO but am still looking for one that does it for the C6.
Might have to be custom made for now but try Mufflex in Trenton, NJ ( www.mufflex-performance.com ), they make them for C5s and LS1 F-bodies.
And I think a set of O2 sims might help with the potential PCM issues that might occur with deleting cats, that or some simple programming with LS2 Edit/HP Tuners/EFI Live etc.
Might have to be custom made for now but try Mufflex in Trenton, NJ ( www.mufflex-performance.com ), they make them for C5s and LS1 F-bodies.
And I think a set of O2 sims might help with the potential PCM issues that might occur with deleting cats, that or some simple programming with LS2 Edit/HP Tuners/EFI Live etc.
Safety Car
Joined: Jun 2004
Posts: 3,563
Likes: 2
From: Dallas Tx
Chevy no, aftermarket yes. They are called 02 SIMS (or simulators).
If all your doing is removing the cats, I doubt there is any noticeable gain to be realized. The factory cats aren't much of a restriction on a stock system, they flow just fine.
Jump up to long tube headers, and a decent muffler system and you will get an noticeable bump in grunt. Then maybe there is a bit more to be gained with an ORP or high flow aftermarket cats.
That was from the late 70's and 80's when the stock cats were so restrictive it was popular to put an off road pipe in there. Today's vette cats are pretty much matched to the flow of the rest of the exhaust system. I think you doing a lot of work for a miniscule gain.
If all your doing is removing the cats, I doubt there is any noticeable gain to be realized. The factory cats aren't much of a restriction on a stock system, they flow just fine.
Jump up to long tube headers, and a decent muffler system and you will get an noticeable bump in grunt. Then maybe there is a bit more to be gained with an ORP or high flow aftermarket cats.
That was from the late 70's and 80's when the stock cats were so restrictive it was popular to put an off road pipe in there. Today's vette cats are pretty much matched to the flow of the rest of the exhaust system. I think you doing a lot of work for a miniscule gain.
