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Duellsmith Duellsmith is offline
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Car: 2011 335i
Default DME comm issue, boost issue.LOG review Please help - 06-16-2019, 04:30 PM

I have never posted before, every issue I have had in the past I've been able to find a thread on, Not this one

Problem 1.
Two months ago I installed a VRSF intercooler and at the same time did a BEF via MHD. Only had one issue, every time I start the car I get a 36BE error. Wouldn't know it was there if I didn't check codes constantly. Only thing I can find is it's a communication error of sorts. I have tried going back to stock and reflashing, updating firmware, verifying everything I can think of. doesn't seem to negatively effect anything but is a little off putting. Any input?

Problem 2.
A week after install of the aforementioned I started to notice that if I was in 5th ( car is an auto) and accelerated moderately or hard I heard what sounds like the diverter valve bleeding boost and the car accelerates like stock. The Boost gauge on the Connect app shows I'm boosting but again I sounds like its bleeding off. I got back under the car checked all the new connections a tightened them a touch more, Tried again with the same results. I started pulling in every gear, 1st-2nd no issue seen, 3rd will do the same thing, 4th will do it but not as frequent as 3rd and 5th, 5th same issue, 6th is a bit different. In 6th the car will boost no problem but I noticed the PSI is higher than it should consistently over 20PSI ( I have seen the little gauge pinned at 25) if I continue to accelerate for more than a few seconds JB4 steps in and sends me to MAP 4. I have not had a single code come up for any of this, makes it even harder to diagnose. Car has 100k on it so I think I have a case of faulty equipment exposed after modification.

With all the research, I am thinking a Boost solenoid or a faulty DV but I cant pin it down. Any advice would be greatly appreciated. Ive attached logs for review as well.
Car: 2011 E90 N55
Mod List:
JB4 with connect
VRSF 7" intercooler and ********
BMS intake/ charge pipe
PUMP BEF via MHD
Running E30

Last edited by Duellsmith; 06-16-2019 at 04:36 PM.. Reason: Forgot to add Mod list and car
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Terry @ BMS's Avatar
Terry @ BMS Terry @ BMS is offline
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Default 06-16-2019, 07:41 PM

It's definitely hitting some sort of a limiter here in 6th. Maybe a flash issue? As a test you could load back the stock flash (stage0), select say map1, and try to recreate it so we know.
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Duellsmith Duellsmith is offline
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Default 06-16-2019, 07:45 PM

Terry thank you, I will do that in the morning and post it when I get to work.
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Duellsmith Duellsmith is offline
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Car: 2011 335i
Default New logs without BEF - 06-17-2019, 07:44 AM

Morning Terry! This morning I flashed back to stock, I noticed the DME comm. error is still present and I have attached logs in MAP1,5,2. 6th gear map 2 after a few seconds of WOT It sends me into limp and I got a 36C9 code. I'm not very good at reading logs so any help would be appreciated.

Last edited by Duellsmith; 06-19-2019 at 06:41 AM.. Reason: Mistake
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