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      11-17-2013, 01:16 AM   #1
rmsurfer212
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N20 downpipe fix

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Hey guys, I recently had a downpipe put on and the CEL light came on. I put on the BMS downpipe fix that evolution racewerks sells. My question is if the CEL will clear itself now?

Thanks
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      11-17-2013, 08:40 AM   #2
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No, it won't go for itself, you have to clear it.
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      11-17-2013, 12:35 PM   #3
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It is not recommended to keep the DP fix all the time.
If you get a jb4 it will clear it for you, and give you a lot more hp
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      11-17-2013, 01:31 PM   #4
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Quote:
Originally Posted by mike@x-ph.com View Post
It is not recommended to keep the DP fix all the time.
If you get a jb4 it will clear it for you, and give you a lot more hp
what is the problem with keeping it on all the time?
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      11-17-2013, 02:00 PM   #5
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Quote:
Originally Posted by rmsurfer212 View Post
what is the problem with keeping it on all the time?
i am not saying that you will have a problem, but i remember reading a thread with people having problems with their o2 sensor after keeping the dp fix for a long time (Of course now that i need the link i cannot find that thread )

Again i have not seen any posts from terry about the dp fix having any link to damaging o2 sensors, but since most of us have a jb4 with the catless dp we do not have the dp fix installed all the time.
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      11-17-2013, 08:10 PM   #6
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I run the catless dp with the dp fix all the time. If I remove I will have a CEL, right?!
That's why I have it installed and never took it off. Never had an issue.
But correct me if I'm wrong, you said that without dp fix the car could have more power, even if everything is fine with it?!
I have the P3 gauge that erases any engine error code, but I guess that if I remove the dp fix the CEL will happens all the time....
Please tell me if the dp fix is stealing some power from the engine.

Thank you!

EDIT:

SORRY, I just read again, you were talking for more power with the jb4, not without dp fix... LOL
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      11-19-2013, 07:54 AM   #7
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Quote:
Originally Posted by MCD View Post
I run the catless dp with the dp fix all the time. If I remove I will have a CEL, right?!
That's why I have it installed and never took it off. Never had an issue.
But correct me if I'm wrong, you said that without dp fix the car could have more power, even if everything is fine with it?!
I have the P3 gauge that erases any engine error code, but I guess that if I remove the dp fix the CEL will happens all the time....
Please tell me if the dp fix is stealing some power from the engine.

Thank you!

EDIT:

SORRY, I just read again, you were talking for more power with the jb4, not without dp fix... LOL
LOL yea i meant more power with a JB4.
If you do not have a JB4 removing the DP will trigger a code.
The Jb4 will auto clear it.
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      12-11-2013, 09:15 AM   #8
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Guys am I the only one who didn't get any error codes after installing a downpipe is that normal ?
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      12-11-2013, 01:34 PM   #9
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Quote:
Originally Posted by rustyminded View Post
Guys am I the only one who didn't get any error codes after installing a downpipe is that normal ?
how long have you been driving the car since you got the dp ?
And are the DP that you installed catless?
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      12-11-2013, 02:39 PM   #10
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Assuming your downpipe doesn't have a cat, it takes either a couple days or maybe 50 miles for the ECU to accept the fact that you are destroying the environment...
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      12-11-2013, 05:46 PM   #11
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Quote:
Originally Posted by mike@x-ph.com View Post
how long have you been driving the car since you got the dp ?
And are the DP that you installed catless?
about 40 miles so far, I just found it takes over 75 miles for it to show and yes it's catless.
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      12-11-2013, 06:03 PM   #12
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YUP it will show soon
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      12-11-2013, 07:22 PM   #13
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Quote:
Originally Posted by mike@x-ph.com View Post
YUP it will show soon
I have the bms stage 2 do you recommend putting it to clear the code before it show up or it won't make a difference
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      12-11-2013, 07:39 PM   #14
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If you already have the tune it will clear it by itself
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      12-14-2013, 08:51 AM   #15
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Quote:
Originally Posted by mike@x-ph.com View Post
If you already have the tune it will clear it by itself
Its off by default (auto code clear) so the code clearing has to be turned on for it to work. All the JB4s ship with the code clearing tuned off out of the box.

Mike
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      12-14-2013, 01:25 PM   #16
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
Its off by default (auto code clear) so the code clearing has to be turned on for it to work. All the JB4s ship with the code clearing tuned off out of the box.

Mike
hmm thanks for the info i did not know that.
i never had to turn the auto clear on my jb4 and never had the light come on
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      12-14-2013, 05:10 PM   #17
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Quote:
Originally Posted by TurboM View Post
Assuming your downpipe doesn't have a cat, it takes either a couple days or maybe 50 miles for the ECU to accept the fact that you are destroying the environment...
Challenge accepted!!!
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      04-30-2016, 08:30 PM   #18
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Quote:
Originally Posted by mike@x-ph.com View Post
It is not recommended to keep the DP fix all the time.
If you get a jb4 it will clear it for you, and give you a lot more hp
Looking at purchasing a DP here real soon, what are my options to not get a code thrown? I have the bm stage 1 tuner,I'll have a injen intake next week and was thinking a catted DP, any suggestions before I buy?
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      04-30-2016, 08:35 PM   #19
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Quote:
Originally Posted by 320i-bmw View Post
Looking at purchasing a DP here real soon, what are my options to not get a code thrown? I have the bm stage 1 tuner,I'll have a injen intake next week and was thinking a catted DP, any suggestions before I buy?
You need a JB4
1- It will take care of the CEL light for you
2- Has a dedicated map for high flow downpipes for max performance increase

No catted DP will guarantee no CEL. People get for the more refined sound + No fuel smell
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      05-02-2016, 12:13 PM   #20
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Can anyone tell me if Dealerships deny any warranty claims if they see a DP (Catted)?
Thanks
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      05-02-2016, 12:43 PM   #21
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Quote:
Originally Posted by malahhaor View Post
Can anyone tell me if Dealerships deny any warranty claims if they see a DP (Catted)?
Thanks
Depends on the dealership but most of the time they do not care unless the reason for your visit is related to the DP
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