Apologies to begin with, this is a longish-winded post:
I have a 2010 BMW E60 535i xDrive. The car just hit 82k miles. I've owned the car for about 6 months now, and only started modifying it. So far I've done a muffler delete, BMS DCI, 1-step colder plugs, Eldor coils, and a JB4 - usually have it set to Map 0 because I commute and like the way the N54 drives normally, but sometimes Map 1 for fun...beautiful days, terrorizing my neighbors, etc.
I've never had any issues with boost leaks or anything of the sort until after I installed the JB4. It's a used unit, and the old owner had it set up to run E85, but I reset all stats to default and since then it's been good. The most boost I've pushed is one time 17psi after doing an initial WOT test on Map 5 (figured it was fine because it was just once and only for a couple seconds). From there, however, I've only run Map 1 as to not damage anything. Sometimes when I run Map 1 or even Map 0 under high (or even medium, say uphill) acceleration I'll get a 30FF and a half CEL (limp mode). Like I said, most of the time I drive like a normal person and I keep it on Map 0 for comfort. So, the 30FF is odd - wasn't normal before JB4, so I figured it might be a boost leak from running at over-stock boost. I haven't done a very good inspection on all the vacuum lines or anything, but I have a VRSF charge pipe + TiAL BOV coming in next week to prevent a cracked charge pipe.
Typically, I hit boost targets just fine or am within 1-2psi. The most odd thing, however, is sometimes under mild acceleration I'll hear a sort of "pulsing" coming from something, seemingly my exhaust. Or at least from under the car - I can hear the exhaust pretty good from driving because of the lack of mufflers now. I decided to sift around the JB4 app parameters yesterday to see if I could find the culprit, and sure enough, the WGDC parameter (which I believe to be wastegate duty cycle, right?) kind of bounces back and forth, following the same "pulsing" I hear while driving. RPMs rise as they should. See the logs below and turn on the 'WGDC' and 'pedal' parameters and you can see this sort of sinewave-like behavior. I'm not sure what the normal wastegate behavior looks like, but I know it is more of a predictable function than the logs show and from what I hear.
I'm also not sure if this is what causes my 30FF code, but I don't believe this behavior was happening prior to my JB4 install. I was going to order boost solenoids and vacuum lines to replace the current ones - this kit from FCPEuro, as I believe they've likely never been done to this vehicle, but wanted to check here if the problem might be anything else. It's also annoying to randomly go into limp mode when I'm just normally driving the car as I should. Thank you for reading and for assistance!
Here's the logs - see 'WGDC,' 'Pedal,' and 'Speed' together as they give a clearer picture of what the issue is:
Log 1: https://datazap.me/u/jeffroii/wgdc-1?log=0&data=1-4
Log 2: https://datazap.me/u/jeffroii/wgdc-2?log=0&data=1-4
Log 3: https://datazap.me/u/jeffroii/wgdc-3?log=0&data=1-4
I have a 2010 BMW E60 535i xDrive. The car just hit 82k miles. I've owned the car for about 6 months now, and only started modifying it. So far I've done a muffler delete, BMS DCI, 1-step colder plugs, Eldor coils, and a JB4 - usually have it set to Map 0 because I commute and like the way the N54 drives normally, but sometimes Map 1 for fun...beautiful days, terrorizing my neighbors, etc.
I've never had any issues with boost leaks or anything of the sort until after I installed the JB4. It's a used unit, and the old owner had it set up to run E85, but I reset all stats to default and since then it's been good. The most boost I've pushed is one time 17psi after doing an initial WOT test on Map 5 (figured it was fine because it was just once and only for a couple seconds). From there, however, I've only run Map 1 as to not damage anything. Sometimes when I run Map 1 or even Map 0 under high (or even medium, say uphill) acceleration I'll get a 30FF and a half CEL (limp mode). Like I said, most of the time I drive like a normal person and I keep it on Map 0 for comfort. So, the 30FF is odd - wasn't normal before JB4, so I figured it might be a boost leak from running at over-stock boost. I haven't done a very good inspection on all the vacuum lines or anything, but I have a VRSF charge pipe + TiAL BOV coming in next week to prevent a cracked charge pipe.
Typically, I hit boost targets just fine or am within 1-2psi. The most odd thing, however, is sometimes under mild acceleration I'll hear a sort of "pulsing" coming from something, seemingly my exhaust. Or at least from under the car - I can hear the exhaust pretty good from driving because of the lack of mufflers now. I decided to sift around the JB4 app parameters yesterday to see if I could find the culprit, and sure enough, the WGDC parameter (which I believe to be wastegate duty cycle, right?) kind of bounces back and forth, following the same "pulsing" I hear while driving. RPMs rise as they should. See the logs below and turn on the 'WGDC' and 'pedal' parameters and you can see this sort of sinewave-like behavior. I'm not sure what the normal wastegate behavior looks like, but I know it is more of a predictable function than the logs show and from what I hear.
I'm also not sure if this is what causes my 30FF code, but I don't believe this behavior was happening prior to my JB4 install. I was going to order boost solenoids and vacuum lines to replace the current ones - this kit from FCPEuro, as I believe they've likely never been done to this vehicle, but wanted to check here if the problem might be anything else. It's also annoying to randomly go into limp mode when I'm just normally driving the car as I should. Thank you for reading and for assistance!
Here's the logs - see 'WGDC,' 'Pedal,' and 'Speed' together as they give a clearer picture of what the issue is:
Log 1: https://datazap.me/u/jeffroii/wgdc-1?log=0&data=1-4
Log 2: https://datazap.me/u/jeffroii/wgdc-2?log=0&data=1-4
Log 3: https://datazap.me/u/jeffroii/wgdc-3?log=0&data=1-4
