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Bypass the cat?

 
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Old 27 Mar 2008, 07:37 am
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Default Bypass the cat?

I was wondering if you Y off the exhaust before the cat converter and then Y it back into the exhaust after the converter would the turbo spool up faster, make more power and not through a computer code?
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Old 27 Mar 2008, 11:14 pm
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Default Re: Bypass the cat?

would the car still pass state inspection ??
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Old 27 Mar 2008, 11:39 pm
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Default Re: Bypass the cat?

Won't do a thing. A 2 1/2" catback will help with turbo spool. If you want to maximize turbo spool then you'll need a full aftermarket turboback exhaust.
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Old 28 Mar 2008, 06:32 am
SRG SRG is offline
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Default Re: Bypass the cat?

From what I've heard if you disable the catalytic (sp?) converter, you coule be nailed with a HUGE fine. I think its a federal law too, not just state.

srg
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Old 28 Mar 2008, 02:36 pm
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Default Re: Bypass the cat?

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Originally Posted by SRG View Post
From what I've heard if you disable the catalytic (sp?) converter, you coule be nailed with a HUGE fine. I think its a federal law too, not just state.

srg

It's around $2500. That's why I went with a Magnaflow highflow cat.
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Old 28 Mar 2008, 04:11 pm
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Default Re: Bypass the cat?

Hollowing out a catalytic converter or replacing it with a test pipe or straight section of pipe is a violation of Federal Law punishable by fines in excess of $25,000 and/or jail time for both the vehicle owner and the person doing the work.

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Old 30 Mar 2008, 08:28 pm
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Default Re: Bypass the cat?

Thats why I said I was just wondering IF.
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Old 31 Mar 2008, 12:39 am
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Default Re: Bypass the cat?

That's good to know, I think I'll have to check into what Canadian law states, I was just about to do that to mine. I would love to pick up some more power and mpg. I wonder on a good running engine which causes more pollution, a cat and lower fuel mileage, or no cats and better mileage...

Ben
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Old 31 Mar 2008, 01:26 am
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Default Re: Bypass the cat?

Quote:
Originally Posted by cleverklutz View Post
That's good to know, I think I'll have to check into what Canadian law states, I was just about to do that to mine. I would love to pick up some more power and mpg. I wonder on a good running engine which causes more pollution, a cat and lower fuel mileage, or no cats and better mileage...

Ben
pick up some more power and mpg?
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Old 31 Mar 2008, 11:21 am
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Default Re: Bypass the cat?

To an extent if you remove restriction from the intake, the head, or the exhaust you'll pick up "free horsepower." An engine is often compared to a big air pump, make the air go in, through, and out easier, you'll improve efficiency.

I previously had a 1993 Dodge Dynasty with a 3.3L engine. I put in a test pipe, removed the muffler, and ran a 2 1/4" diesel resonator. I gained a second in my 0-60 time. My brother has a 1994 New Yorker. His trip computer showed he gained 2 mpg when he pulled the cats out of the exhaust.

I'm thinking there are gains to be had on my car pulling the cat. Keep in mind mine is N/A tho. I'll check into the bylaws here, and if it's all good I'll try it.

Ben
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2007 Suzuki King Quad 700 4x4 for when the road gets bumpy.

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