Eliminate the cat???
#1
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Eliminate the cat???
Hypothetically. I I removed the CAT, and left the muffler, with just a staright pipe going back. Along with an O2 simulator for the rear O2 sensor. Would I gain more HP, than I lost in Torque due to backpressure?
#4
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Actually you would lose power and torque. Plus you have an o2 sensor before and after your cat, which would really mess up readings causing your car to run pretty darn ugly. Keep the cat, you may gain .000001hp but kill 5000 nice smelling flowers....plus its illegal.
#5
Actually you would lose power and torque. Plus you have an o2 sensor before and after your cat, which would really mess up readings causing your car to run pretty darn ugly. Keep the cat, you may gain .000001hp but kill 5000 nice smelling flowers....plus its illegal.
It is a common misbelief that removing the Cat will decrease power and torque. Of course the regulatory agencies and all the public service centers will tell you that to deter you from removing it......and the "Air Care" laws make it illegal in some cities.
...But if you are lucky enough to live in an unregulated area, like I do, try it. I've done it to a few cars and there was always a noticeable improvement.
Not including the actual exhaust headers, the pressure drop across your Catalytic converter is equal to the rest of the exhaust system including resonator, mufflers and pipes.
Driving at speeds above the posted speed limit is illegal too.
#6
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Bullet, you have to remember that he'* NA.....he needs the backpressure more than you and I do. We've already had an SE try this, and he lost so much low end, he was pissed at himself for not listening. He has a Cat again. Just a high-flow unit now.
#7
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In any case, removing the cat is something I dont really like. High flow is the way to go. You keep the backpressure needed for NA Bonnevilles and you maintain your environmental responsibility.
Sounds better with a proper exhaust set up too
Sounds better with a proper exhaust set up too
#8
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Ok, well then. Hi-flow it is. Its fuuny though, I have a friend with a 96 Nissan Maxima, who removed his cat as well, he seemed to gain some power. On other hand, I have heard that Nissans are very restrictive on their exhaust and intake, so that might be the case.
#10
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Okay, my turn! The main reason I wouldn't run without the cat, aside from legal/environmental and potential power loss, is the smell. Cars that were made to run with cat'* stink to high heaven without one. Ever get stuck behing someone whose car smells like rotten eggs? Guess why....