cats
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Teching In
Joined: Jun 2004
Posts: 26
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From: knoxville tn
cats im going to just put an exhaust on my car no headers for a while but was wondering should i take my cats off and what has to be done when doing that? will it throw a code and will it hurt it to have the code? also will there be any loss of mpg and about how much if any? im going to be putting on a magnaflow muffler and a cutout...car sees ~35000mile per year so gas is a factor
Not cat won't throw a code. Unles you have a dual cat system which were 95-96 CA cars, or all 97s, i dont see it being a problem to remove. You won't lose any MPG, you might even gain some. You may have a two 02 sensor system with your 96. I'm not entirely sure on the years, but you probably do. It has 02 sensors both before and after the cat, which could possibly throw a code, though i doubt it. I have no cat (or exhaust for that matter) on my 95 Firebird, didn't lose any MPG, your car will be noticeably louder, but mine didnt throw any codes.
On The Tree
Joined: Jan 2005
Posts: 103
Likes: 0
From: Cheyenne, WY
Originally Posted by wants2race69
i have the dual cats....should i get o2 sims or just leave the back ones hanging?
You may lose MPG with 02 sims. The 02 are put there for Emmissions, I.E MPG. The lower your emmissions usually the more efficient your engine, which means better gas mileage.
I'm not exactly sure on what you should do with them, i guess get 02 sims, but i would not leave them hanging. Your engine will not run right in closed loop.
I'm not exactly sure on what you should do with them, i guess get 02 sims, but i would not leave them hanging. Your engine will not run right in closed loop.
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