They're a little less "sensitive" but yes, it still can trip the MIL.
- Bernd
-----Original Message-----
From: Mike Guzinski [mailto:mguzinski@gmail.com]
Sent: Thursday, July 24, 2008 5:19 PM
To: dakota-truck@dakota-truck.net
Subject: Re: DML: Check engine light from high flow cat. Was: Magnaflow CAT
(23246)...Best price instock?
Bernd,
Any knowledge of the Mopar Performance PCM? Will the MIL trip on
those PCMs as well or still "software" dependant?
Thanks,
Mike
On Thu, Jul 24, 2008 at 5:17 AM, Bernd D. Ratsch <bernd@dodgetrucks.org>
wrote:
>
> Yup...replacing the O2 isn't going to fix it. The High-Flow cats change
the
> readings just enough to trip the "Cat Efficiency" code. This happens but
> not on all vehicles - it's software revision dependant. Your best bet:
Get
> an O2 simulator for the rear O2.
>
> - Bernd
>
> -----Original Message-----
> From: Ewraven [mailto:ewraven@gmail.com]
> Sent: Thursday, July 24, 2008 1:07 AM
> To: dakota-truck@dakota-truck.net
> Subject: Re: DML: Check engine light from high flow cat. Was: Magnaflow
CAT
> (23246)...Best price instock?
>
>
> Interesting that you should ask this question right now. I too have a
> 1999 4x4 5.2 liter Dakota, mine has the 5 speed manual transmission.
>
> Like three months ago, I had a Magnaflow high flow cat put on my
> truck. However, I had him upgrade it from the factory size of like
> 2.5 inches to using a three inch in/out cat with a three inch diameter
> pipe from the Y-pipe to the cat and from there it uses a reducer to go
> from the 3 inch cat back to the factory 2.5 inch pipe to a 40 series
> Flowmaster utilizing the factory tailpipe.
>
> Roughly one months after all of this was installed, my check engine
> light came on. I don't recall the exact code it throws, it is for a
> bad catalytic converter though. The check engine light has turned off
> twice since then but came back on within a day after each time.
>
> I'm going to be replacing the o2 sensor after the cat in hopes that it
> is fouled up or just plain old. I mean, the truck does have 137,000
> miles on it! If that doesn't make the light go off, I'm not sure what
> I'll do. I mean the only other option is to replace the cat with a
> non high flow unit I guess.
>
> Anyone got any suggestions for my particular problem?
>
> The sound with this particular combination of exhaust parts is just
> plain intoxicating!
>
>
>
>
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