[Envuks]

Originally Posted by james008

I bought a new car with the DP fix already installed. I am not running any tunes just cattless and the DP fix. Do I need to remove the DP fix? And only install when I need to pass inspoection? or is this only for people running tunes? I am not throwing any codes right now...

Get a tune ASAP!

[HermanL]

That is weird, I have both JB4 and Procede and I believe they both have DP fix built-in, unless they automatically clear all the cat codes, it shouldn't have thrown codes right after I switched. I have reset ECU couple times, also check if my pre-o2 sensors were correctly installed (which I think they are, black wire goes to long dp, grey goes to the shorter one). codes keep coming back. only other thought is that my o2 sensors have gone bad and considering my car is almost 7yrs old, this could be the reason. I emailed Cobb and waiting for their response before replacing my o2 sensors.

Originally Posted by badfish718

Thanks to a forum member, I switched the yellow wires #19 and #20 opposite to what it says in the DP Fix instructions and I have not thrown a related code since.

[badfish718]

Originally Posted by HermanL

That is weird, I have both JB4 and Procede and I believe they both have DP fix built-in, unless they automatically clear all the cat codes, it shouldn't have thrown codes right after I switched. I have reset ECU couple times, also check if my pre-o2 sensors were correctly installed (which I think they are, black wire goes to long dp, grey goes to the shorter one). codes keep coming back. only other thought is that my o2 sensors have gone bad and considering my car is almost 7yrs old, this could be the reason. I emailed Cobb and waiting for their response before replacing my o2 sensors.

What codes are you getting?

[HermanL]

Originally Posted by badfish718

What codes are you getting?

P2C7F and P2C6A

exactly the same codes as you have before, I have never messed dp fix but I am going to check it out right now, maybe the previous owner have two pins switched.

[badfish718]

You ever figure it out?

I would PM but I think this thread has some pretty valuable info considering how many people run catless DPs on the N54...

[specialist]

I did a cobb clear code on my 335i 2007. catless down pipes

with a custom tune on cobb. I decided to do a code look up

I get the p2aaE, p2aaf

and p2c7E, P2c6a. But no engine Do i need a db fix to get rid of these codes?

[cstmx_ryder]

So, if you are completely catless like my self, you'll need a tune to suppress the SES light from having catless DPs, OR you need a DP fix that's NOT built into the tune.

I have been catless for about 5 years now, had Procede first, and then MHD. When I had the Procede, there was DP fix built in and the user can adjust the percentage because every car's a little different. When I switched to MHD, I obviously took the Procede out, because MHD had a built in SES suppression for catless DPs.

With that being said, there are two options:

1. Switch back the stock cats.
2. Get a tune with DP code suppression built in.

[JakesJB4]

Did anyone ever figure any of this out?
Tried swapping 19 & 20, made the car run bad. Tried to reset adaptations with the jb4 (menu 1 option 7) and the codes came back with out even driving anywhere.
My codes are; 2C3D, 2CA6, & 2CAA