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Car: 2013 BMW 335i
Default Missing at WOT - 10-12-2017, 09:19 AM

My car occasionally misses at WOT. I've attached a clean, full 3rd gear run and a run where the car stumbles during WOT. It didn't stumble as badly as it has in the past. Usually I floor it and the car has no power, and then there's a lot of abnormal crackling from the exhaust as I back off the throttle.

2013 335i (early build PWG)
N55
93oct fuel
6sp manual
62k miles

BMS Intake
VSRF hollow midpipe
M-sport catback
JB4 on Map 2
NGK 5992 1-Step Colder Spark Plug gapped at 0.022"
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File Type: csv 171012_1104.csv (5.8 KB, 9 views)
File Type: csv 171012_1122.csv (3.5 KB, 6 views)
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Default 10-12-2017, 04:42 PM

You need to update your firmware before going any further...that is really old firmware. Raise your FOL to 70 when you do.



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Default 10-13-2017, 05:06 AM

I updated the firmware and changed FOL to 70. I wasn't able to get a 3rd gear run in this morning, but here is a great log showing the loss of power I'm feeling.
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Default 10-14-2017, 07:24 AM

A check engine light and error code 180001 popped up twice yesterday for having a hollow midpipe. I was on map 1 and map 5 when it came on. Aren't those maps supposed to suppress the CEL for a hollow midpipe? It hasn't done that the last 6 months until I updated the firmware yesterday. Do I need to activate the CEL suppression somehow?
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Default 10-15-2017, 12:00 PM

Trims are maxed out and you are running lean. Raise FOL to 90 and see if that helps.

JB4 can clear codes but is not a long term fix for running C-less.

http://www.n54tech.com/forums/showthread.php?t=47748



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