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jake
Dodge Dakota
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1/29/2008
11:58:53
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 Subject: exhaust question
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Message:
was wonderin if i can take the cats off from behind my manifolds and mount the o2 sensors back on some straight tubing? i havew an 01 dak with the 4.7L.
Thanks
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daddio
Dodge Dakota
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1/29/2008
12:32:44
|  RE: exhaust question
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Message:
you should be able to. it could throw a code though. i don't want to sound like the smog police but, i'm sure you already know that is illegal.
a lot of 4.7 guys say the restrictive area in the exhaust is really the y-pipe and no so much the cats.
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.boB
Dodge Dakota
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1/29/2008
19:06:46
| RE: exhaust question
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Message:
Yes, you can do it. But, it will throw an error code. You'll need to replace the sensors with device that emulates the correct signal. The are usually available on e-bay.
Now, the real question is, why would you want to? You will lose some of your steady cruise performance, and burn more fuel. I have not seen any proof anywhere that this mod will get you more power. And, it's illegal in all 50 states under the federal smog program.
If you're convinced your cats are costing you power, do this instead. Replace the entire Y pipe with a high flow pipe. Replace the stock cats with a performance oriented, high flow cat. Put new O2 sensors back in the original positions. Yes, you can have your cake and eat it too.
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Jake
Dodge Dakota
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2/01/2008
11:55:55
| RE: exhaust question
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Message:
now could i put the cat further down the pipe its just a little too closterphobic for my likings
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tommy
Dodge Dakota
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2/01/2008
12:56:45
| RE: exhaust question
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The reason the cat is there is because it's designed to run hot,
hot gases flow faster, putting it farther along the exhaust system might cause it to be even more restrictive.
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Chuck
Dodge Dakota
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2/01/2008
18:54:34
| RE: exhaust question
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Message:
Why don't you dyno a few different configurations and let us know which way works best.
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Jake
Dodge Dakota
JOIN HERE
2/04/2008
14:16:24
| RE: exhaust question
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Message:
probably for the same reason you dont try different configs. i dont make nearly enough money
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trevor
Dodge Dakota
JOIN HERE
3/06/2008
10:25:59
| RE: exhaust question
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Message:
the cats are there for a reason and if removed it will make your truck not run right which is never any fun my friend thought the same put headers on it and no cats and ran like crap had had the cats put back in
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