Log Check please! - N54Tech.com

DoobiieDripp · 06:46 PM

I installed my Jb4 in my new 335i two days ago and right off the back in Map 5 and Map 1 I get a misfire in Cylinder 1 if I go WOT, I'm constantly getting the Boost over target & Low Boost Mode Codes. Checked my user adjustments to make sure they were set to default and they were. I took a couple of logs the best I could. I'll attach them. Also I noticed that in map 0 I'm boosting to 20psi and I know thats not good. If anyone could help me figure out what's wrong that would be great. Anyone know if this issue could be because I worked something wrong? I double check everything after install but maybe I still missed something.

DoobiieDripp · 06-28-2017, 04:00 PM

Forgot to add the cars info it's a 2010 335i with DCI's and an Active Autowerke Charge pipe and BOV.

Steve @ BMS/Fuel-It! · 06-28-2017, 10:29 PM

Some overboost at tip in but you need to take WOT logs.

In addition, verify your menu's 11 and 12 are set to default as well.

If cylinder 1 is consistent, then you'll need to troubleshoot that systematically swapping hardware.

DoobiieDripp · 06-29-2017, 02:09 AM

It's a tad bit difficult to get a WOT log because as soon as I floor it the car misfires. But I logged what I could and attached it. As far as menu 11 and 12 I think they're set to default. And to troubleshoot cylinder 1 I would swap spark plug or coil with others to see if the misfire changes cylinders correct?

Steve @ BMS/Fuel-It! · 06-29-2017, 10:59 PM

That's correct...swap hardware until the symptoms follow. I wouldn't assume what the menu 11 and 12 settings are.

DoobiieDripp · 06-30-2017, 01:32 PM

So Menu 11 was at 1k Rpm and I changed it to 0. Menu 12 was at 3k Rpm and I changed that to 2400 RPM as recommended. I'm no longer boosting to 20psi in Map 0 but still misfiring. ILloyd check the hardware today since I'll have some time.

Steve @ BMS/Fuel-It! · 07-02-2017, 11:58 AM

If you notice surging at light cruise, raise menu 11 back up.