99-06 Headers on NNBS
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99-06 Headers on NNBS
I know the 99-06 LT headers will fit on our NNBS trucks but I was wondering if you guys had to replace the cats when you put the new headers in or if they just bolted right up into place? Let me know guys, hoping to get some ordered in the next month or so and just need to see what I'm up against.
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The way my exhaust is ran right now I'm not sure how much farther down I can go with the cats without redoing the exhaust, any suggestions? I would just run it straight but here in CA emissions is a ****. If I ran without the cats would I expect any issues as far as computer sensors are concerned or anything? Also would I be looking at a little extra gain or loss without them? And my last question on that would be sound, without the cats am I going to hear a throatier exhaust because of the less restriction?
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The way my exhaust is ran right now I'm not sure how much farther down I can go with the cats without redoing the exhaust, any suggestions? I would just run it straight but here in CA emissions is a ****. If I ran without the cats would I expect any issues as far as computer sensors are concerned or anything? Also would I be looking at a little extra gain or loss without them? And my last question on that would be sound, without the cats am I going to hear a throatier exhaust because of the less restriction?
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There are a couple things you can do about the code it will throw. You can buy a couple of spoofs, which plug into your O2 harness. They simulate a working O2 sensor, so your computer doesn't know that you took the cats out. Or you can buy HP Tuners software, and really go to town programming your pcm for not only additional power, but tire changes, gear changes, etc. Oh, and you can even turn off codes like the one that is put out when you remove the cars.
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I'm assuming the O2 sensors are the same for most all GM vehicles. That could be a bad assumption. I used these on my 2002 Camaro SS for a while until I got LS1edit.
http://www.afterthoughtsauto.com/o2sim.html
http://www.afterthoughtsauto.com/o2sim.html