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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Downpipe "fix" issue



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      07-18-2018, 08:39 PM   #23
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Here is the DP fix wired into the JB4 before I pulled it out and then how I wired it into the stock ECU. A local shop was gracious enough to let me use their scan tool to reset the adaptations and clear any codes after setting the DP fix in the stock ECU. I put 65 miles on it this evening and I'll put more on tomorrow morning, hopefully ending in some positive results. I have not yet however, checked to see if the Map therm. input signal code is still present or not. I'll be able to double check that tomorrow.
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      07-19-2018, 12:13 AM   #24
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That looks about right keep us updated with the code. Here's a picture of my setting when I used it for reference but of course every car is a bit different.
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      07-19-2018, 03:16 PM   #25
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Finally got it dialed in. Not sure if the JB4 wiring was goofing it up, but it did its job and no more DP codes with readiness across the board! Thanks to everyone who helped me solve the problem!
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      07-19-2018, 03:22 PM   #26
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Glad it worked out and was just weird wiring. Hopefully when you put it back in you can get it sorted out.
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      07-22-2018, 08:58 PM   #27
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Quote:
Originally Posted by Czechmate View Post
Finally got it dialed in. Not sure if the JB4 wiring was goofing it up, but it did its job and no more DP codes with readiness across the board! Thanks to everyone who helped me solve the problem!
Awesome! Enjoy till you need to do it again....

Also dont forget to uninstall, it's not meant to be driven with the fix in permanently...take your time with that and dont force anything. Use a small pick or screwdriver to careful push the pins and drag them out.
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      07-23-2018, 06:49 PM   #28
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Quote:
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Quote:
Originally Posted by Czechmate View Post
Finally got it dialed in. Not sure if the JB4 wiring was goofing it up, but it did its job and no more DP codes with readiness across the board! Thanks to everyone who helped me solve the problem!
Awesome! Enjoy till you need to do it again....

Also dont forget to uninstall, it's not meant to be driven with the fix in permanently...take your time with that and dont force anything. Use a small pick or screwdriver to careful push the pins and drag them out.
Yep! I got what I needed out of it and uninstalled it the same day. I am now ordering the missing cable from BMS so I can get the two step wired properly. I have gotten 29E0 and 29E1 codes twice now, but may have been because I was running map 2 with 91 octane instead of 93+? N54s seem endless when chasing down new code after new code, but I love how much I've learned while owning the car. Seems like this thread has run its course! Thanks again everybody
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