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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 05-11-2004, 03:44 PM   #1 (permalink)
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Hi,
how much horsepower I will gain, cutting out my cat and using instead of them 2 resonators?
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Old 05-12-2004, 10:09 AM   #2 (permalink)
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probably not much bro, but youll definately hear a differance
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Old 05-12-2004, 04:57 PM   #3 (permalink)
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Originally posted by Furious@May 12 2004, 10:49 AM
probably not much bro, but youll definately hear a differance
hmm, exhaust will sound bad and no extra horses?
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Old 05-12-2004, 06:26 PM   #4 (permalink)
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Not necessarily bad, just loud. Definitely not ricer, but more like muscle car.
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Old 05-12-2004, 08:28 PM   #5 (permalink)
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its loud ive heard it before, kinda like a muscle car but with a tinge of rice.
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Old 05-12-2004, 08:41 PM   #6 (permalink)
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Agreed.
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Old 05-12-2004, 08:43 PM   #7 (permalink)
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My brother cut out his cat and resonater on his '97 nissan maxima. Don't do that, he lost horsepower. But we didn't do a very good job putting the new exhaust in, so that might have made a difference.
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Old 05-12-2004, 10:20 PM   #8 (permalink)
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Yeah, it's like the old VW super beetles. They gotta have like a two foot pipe on them because of a poor head design otherwise there isn't enough back pressure and the engine loses like all its power. Kinda funny.

So anyways, to little back pressure can be bad for a car's performance. Some back pressure is needed to help keep the charge in the cylinder. But too much doesn't allow the gases to escape quickly enough. I'm not saying your car is going to suck if you take out the cat, but it's something to consider.

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