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David
Dodge Dakota
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12/08/2002
15:01:01
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 Subject: Help o2 pcm trick
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i have an 02 4.7 and i gutted the third cat and now i would like to gut the other two but i pretty sure i'll need the special o2 replacments to tell the pcm that everything is okay. Do i need to replace all 4 or just two? Does any excpect a loss of HP with this modification?
Thank you
David
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conig
Dodge Dakota
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12/08/2002
19:27:02
|  RE: Help o2 pcm trick
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http://www.dodgedakota.net/boards/per/6329.html
check out this thread.
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Texas Todd
Dodge Dakota
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12/10/2002
13:54:12
| RE: Help o2 pcm trick
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David,
I think the KRC tech once posted that the O2 sims really don't take advantage of the constant variability of the system feedback with regards to the a/f mixture ratio. I dunno, maybe he'll post it again.
I have a 01 4.7 QC, How, (simple directions) did you go about gutting the third cat? ( I mean what method did you use to remove and replace it?)
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conig
Dodge Dakota
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12/10/2002
17:08:31
| RE: Help o2 pcm trick
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Message:
I didn't gut my cat I replaced it with strait pipe I also don't have precats.
I have been running this set up for over a year, plus if you think about it the 2nd o2 sensors are ther just to assure the cat is working so your just avoiding the check engine light, the pcm doesn't even read them at full throttle.
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