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Old July 15th, 2004, 11:44 PM   #1
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eBay V6 High Flow Cat a Joke?

Are the aftermarket chromed out and other so called Mugen high-flow cats anything worth buying for the I4 or the V6? They are only $35 or something and if they open up air flow with intake or exhaust wouldn't it be beneficial, especially for the price, or is this a piece of crap? Anyone "taken one for the team" here? Someone mentioned it, but if you have $0.02, let's hear it.
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Old July 16th, 2004, 12:30 AM   #2
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the only $35 you can spend to make your car go faster is a tank of premium fuel.
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Old July 16th, 2004, 01:08 AM   #3
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it's a resonator that replaces your cat. probably the best way to spend $35 to make your car go faster.

even though the cats on the current accords flow very well, nothing flows as well as an empty pipe. write that down.
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Old July 16th, 2004, 01:37 AM   #4
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If you replace it with a resonator or straight pipe, you'll have to buy O2 sensor simulators.
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Old July 16th, 2004, 01:47 AM   #5
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nah not really. the MIL that comes up is only an alert. it won't put your car into limp mode.
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Old July 16th, 2004, 01:59 AM   #6
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Quote:
Originally Posted by i3igpete
nah not really. the MIL that comes up is only an alert. it won't put your car into limp mode.
True (most of the time anyways) but you will always have a CEL light on. You will never know if the CEL light is on because of that O2 sensor or from another problem. So an O2 sensor simulator would be a wise investment .



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Old July 16th, 2004, 02:30 AM   #7
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not if you're awesome like me and have an OBD2 scanner hooked up to your palmpilot!
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Old July 16th, 2004, 02:40 AM   #8
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Quote:
Originally Posted by i3igpete
not if you're awesome like me and have an OBD2 scanner hooked up to your palmpilot!
I am awesome like you because I have one as well hehe .

http://www.v6performance.net/forums/...ad.php?t=20711

http://www.v6performance.net/forums/...3&postcount=22

But even with that it's still annoying to always have to check for codes. An O2 simulator would be the best idea.



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Old July 16th, 2004, 09:29 AM   #9
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Quote:
Originally Posted by Plumaccordcoupe
True (most of the time anyways) but you will always have a CEL light on. You will never know if the CEL light is on because of that O2 sensor or from another problem. So an O2 sensor simulator would be a wise investment .

Cant you just turn the CEL light off? Or will it keep coming back on?

Tom
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Old July 16th, 2004, 09:33 AM   #10
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Ill jump in on this since I have done it. I have a straight pipe on my car since I got my magnaflow put in and it does not throw any CEL's. Our cars have 3 cats and I had the third one removed which is the one in the exhaust system. The other 2 are at the block which you cannot remove. The one on ebay is a pretty good buy since its bolt on. Mine was welded on since I had mine done before ebay offered any. So if you remove the 3rd cat, you will not throw any CEL's because there is no sensor after the first 2 cats.
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Old July 16th, 2004, 09:42 AM   #11
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So i3igpete says it'll throw a cel light, and relentless says it doesn't. Why does it throw it on some cars and not others?
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Old July 16th, 2004, 10:49 AM   #12
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Well i3igpete has a 4-cylinder, and Relentless has a V6. That could be the difference
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Old July 16th, 2004, 12:10 PM   #13
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Quote:
Originally Posted by relentless
Ill jump in on this since I have done it. I have a straight pipe on my car since I got my magnaflow put in and it does not throw any CEL's. Our cars have 3 cats and I had the third one removed which is the one in the exhaust system. The other 2 are at the block which you cannot remove. The one on ebay is a pretty good buy since its bolt on. Mine was welded on since I had mine done before ebay offered any. So if you remove the 3rd cat, you will not throw any CEL's because there is no sensor after the first 2 cats.
Hey, did you happen to put on the straight pipe AFTER the magnaflow or all at once? Did you notice any increase in exhaust tone? I like my Borla exhaust but its actually a bit too quiet and a straight pipe for $35 might fix it!
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Old July 16th, 2004, 10:05 PM   #14
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There's no sensors after the 3rd cat on the V6s. go ahead and take it off!
cats are so restrictive....
*check your local emission rules before you do that *
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Old July 17th, 2004, 01:30 AM   #15
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Quote:
Originally Posted by AV6on19s
Cant you just turn the CEL light off? Or will it keep coming back on?

Tom
No, you can't just turn it completely off because it's there for a reason. You can clear the O2 code which will turn the CEL light off. But in this case it will come right back on since the problem is still there.

Quote:
Originally Posted by Curry619
There's no sensors after the 3rd cat on the V6s. go ahead and take it off!
cats are so restrictive....
*check your local emission rules before you do that *
Thatís good to know for the 7th gen AV6 owners. 7th gen inline 4 owners will still need an O2 simulator though.



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Old July 17th, 2004, 02:15 AM   #16
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Quote:
Originally Posted by AV6on19s
Hey, did you happen to put on the straight pipe AFTER the magnaflow or all at once? Did you notice any increase in exhaust tone? I like my Borla exhaust but its actually a bit too quiet and a straight pipe for $35 might fix it!
I noticed an increase in exhaust tone when comparing other V6er's maganaflow. So yes, yours will be louder if you put on a straight pipe.
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Old July 17th, 2004, 02:45 AM   #17
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No, you can't just turn it completely off because it's there for a reason. You can clear the O2 code which will turn the CEL light off. But in this case it will come right back on since the problem is still there.
can always pull the blub
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Old July 17th, 2004, 03:07 AM   #18
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Quote:
Originally Posted by Curry619
can always pull the blub
Yeah but then you will have trouble knowing if there is a problem with the engine.

And here's an example of what will happen if you do that.

You: My engine is acting funny.
Dealership: Ok well look at it.
10 minute later....
Dealership: We pulled 5 stored trouble codes but can't figure out why your CEL light isn't on.
You: I took it out.
Dealership: WTH did you take it out?
You: Because I took out the cat and was to lazy to get an O2 simulator.

hehe



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