Boost leak issue

Bimmertodd88 · 07-31-2018, 06:47 AM

Hey guys so I'm having a boost leak issue and I'm wondering if I botched the install of the dv+. I was having a boost leak issue for a while then I got smoke tested and said my chargepipe to intercooler connection is the cause of my boost leak. So then I found out the person who installed me intercooler forgot to put the O-ring in the chargepipe to intercooler connection. So I fixed that and then in that same session I installed the dv+. And I'm still having a boost leak issue. I figured it had to be the dv+ because if I fixed the issue of the chargepipe to intercooler then it has to be the dv+. I don't wanna pay for another smoke test and also to busy to take it to the shop so I figured I'd ask you guys. I also hear a flow of air that I never heard before from what sounds like where the dv+ is located. Here is a log too Incase it helps. Appreciate the help.

http://www.bootmod3.net/log?id=5b5a073cd10b43626a89d103

JaredG_F30 · 07-31-2018, 08:01 AM

I don't see a boost leak from the log. Largest boost target to MAP pressure delta is only 1 PSI.

Bimmertodd88 · 07-31-2018, 08:07 AM

Quote:

Originally Posted by JaredG_F30

I don't see a boost leak from the log. Largest boost target to MAP pressure delta is only 1 PSI.

Maybe I don't have one but reason I say I have one is because when I had the boost leak for sure my engine had a rough idle. And it stutters at low rpms. And after I fixed it. It still does it. I been having this issue for a while and can't seem to figure it out. It started happening after I cut my mufflers off but I had a boost leak before that so I though cutting the mufflers off made the symptoms of the boost leak worse but maybe it's a vacuum issue I don't know. I'm been going crazy trying to figure this out

JaredG_F30 · 07-31-2018, 08:09 AM

What plugs are you running?

Bimmertodd88 · 07-31-2018, 08:11 AM

Quote:

Originally Posted by JaredG_F30

What plugs are you running?

I just changed them to the ngk plugs recommended by everyone and bootmod3 and gapped them to .020

Bimmertodd88 · 07-31-2018, 08:51 AM

Quote:

Originally Posted by JaredG_F30

What plugs are you running?

It's the ngk 97506. I thought the spark plugs was my issue as well but I changed them last week and I still have the issue

JaredG_F30 · 07-31-2018, 01:51 PM

Do you have an aftermarket intake? If so put the stock one back on. If you still have the problem then gap your plugs to 0.024".

jgoens · 07-31-2018, 02:15 PM

Were you having the issue before the dv+ install?

Bimmertodd88 · 07-31-2018, 02:30 PM

Quote:

Originally Posted by jgoens

Were you having the issue before the dv+ install?

Yes. But I assumed it was the charge pipe to intercooler connection because I got smoke tested before the install and it was leaking boost from there. Could it be a vacuum issue?

jgoens · 07-31-2018, 03:41 PM

Quote:

Originally Posted by Bimmertodd88

Yes. But I assumed it was the charge pipe to intercooler connection because I got smoke tested before the install and it was leaking boost from there. Could it be a vacuum issue?

Hmm..not sure. No codes? The variable, as you said is that it started after cutting off mufflers, but that would not seem to cause stuttering or rough idle unless you bumped something loose somewhere.

Bimmertodd88 · 07-31-2018, 03:44 PM

Quote:

Originally Posted by jgoens

Quote:

Originally Posted by Bimmertodd88

Yes. But I assumed it was the charge pipe to intercooler connection because I got smoke tested before the install and it was leaking boost from there. Could it be a vacuum issue?

Hmm..not sure. No codes? The variable, as you said is that it started after cutting off mufflers, but that would not seem to cause stuttering or rough idle unless you bumped something loose somewhere.

I was getting codes. Air mass to high then I put the o ring in the chargepipe like it was suppose to be and now it's not as bad as it was before. It still does it a little bit but I get no code. But yeah I think with the backpressure maybe it was masking the leak and now that the backpressure is gone the symptom is not masked anymore

Bimmertodd88 · 08-01-2018, 07:00 AM

Update. Chargepipe meth bung was still loose I tightened it car runs better but wastegate duty cycle is still way too high so the leak is still there. I also smoke tested the bms intake which smoke was coming out from the maf sensor(smh) lol. Today I will put the car in the air and check under the car to cancel out the diverter.

07-31-2018, 06:47 AM	#1
Bimmertodd88 Private First Class 53 Rep 180 Posts Drives: 2014 335i M-Sport Join Date: Mar 2018 Location: 33714 iTrader: (0)	Boost leak issue Hey guys so I'm having a boost leak issue and I'm wondering if I botched the install of the dv+. I was having a boost leak issue for a while then I got smoke tested and said my chargepipe to intercooler connection is the cause of my boost leak. So then I found out the person who installed me intercooler forgot to put the O-ring in the chargepipe to intercooler connection. So I fixed that and then in that same session I installed the dv+. And I'm still having a boost leak issue. I figured it had to be the dv+ because if I fixed the issue of the chargepipe to intercooler then it has to be the dv+. I don't wanna pay for another smoke test and also to busy to take it to the shop so I figured I'd ask you guys. I also hear a flow of air that I never heard before from what sounds like where the dv+ is located. Here is a log too Incase it helps. Appreciate the help. http://www.bootmod3.net/log?id=5b5a073cd10b43626a89d103
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07-31-2018, 08:01 AM	#2
JaredG_F30 Lieutenant Colonel 1106 Rep 1,499 Posts Drives: 2014 335i, M-Sport, Manual Join Date: Dec 2016 Location: Raleigh, NC iTrader: (0)	I don't see a boost leak from the log. Largest boost target to MAP pressure delta is only 1 PSI. __________________ 2014 F30 335i, M-Sport, 6MT, V804s, custom exhaust, CTS Turbo Intake & IC, FTP CP, VRSF DP, TMS Strut Brace, BM3 Stg 2, AEM WMI, H&R Sport Springs (381 whp, 429 wtq on Cali 91oct before WMI). SPI Films Blog/DIY Vids
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07-31-2018, 08:09 AM	#4
JaredG_F30 Lieutenant Colonel 1106 Rep 1,499 Posts Drives: 2014 335i, M-Sport, Manual Join Date: Dec 2016 Location: Raleigh, NC iTrader: (0)	What plugs are you running? __________________ 2014 F30 335i, M-Sport, 6MT, V804s, custom exhaust, CTS Turbo Intake & IC, FTP CP, VRSF DP, TMS Strut Brace, BM3 Stg 2, AEM WMI, H&R Sport Springs (381 whp, 429 wtq on Cali 91oct before WMI). SPI Films Blog/DIY Vids
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07-31-2018, 01:51 PM	#7
JaredG_F30 Lieutenant Colonel 1106 Rep 1,499 Posts Drives: 2014 335i, M-Sport, Manual Join Date: Dec 2016 Location: Raleigh, NC iTrader: (0)	Do you have an aftermarket intake? If so put the stock one back on. If you still have the problem then gap your plugs to 0.024". __________________ 2014 F30 335i, M-Sport, 6MT, V804s, custom exhaust, CTS Turbo Intake & IC, FTP CP, VRSF DP, TMS Strut Brace, BM3 Stg 2, AEM WMI, H&R Sport Springs (381 whp, 429 wtq on Cali 91oct before WMI). SPI Films Blog/DIY Vids
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07-31-2018, 02:15 PM	#8
jgoens Major General 3788 Rep 5,776 Posts Drives: 2013 335i msport Join Date: Nov 2014 Location: San Mateo, CA iTrader: (0)	Were you having the issue before the dv+ install? __________________ 2013 335i Msport Black sapphire/Coral red. MHD. stage 2--e30 VRSF DP, ER CP, Dinan Shockware. VRSF 12mm/15mm spacers. Cobra dashcam. Various codings. Last car: 2011 335i Msport. JB4. Vrsf CP
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08-01-2018, 07:00 AM	#12
Bimmertodd88 Private First Class 53 Rep 180 Posts Drives: 2014 335i M-Sport Join Date: Mar 2018 Location: 33714 iTrader: (0)	Update. Chargepipe meth bung was still loose I tightened it car runs better but wastegate duty cycle is still way too high so the leak is still there. I also smoke tested the bms intake which smoke was coming out from the maf sensor(smh) lol. Today I will put the car in the air and check under the car to cancel out the diverter.
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