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Boost leak?
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06-28-2015, 09:52 PM | #1 |
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Boost leak?
For those who have had boost leaks. I need suggestions. No codes..mm car runs fine except no boost. Intercooler connections seem fine. Chsrgepipe is fine. What else could be causing me to have no boost. My vaccum lines are good...I have a boost gauge in my vent and registers vaccum fine...I'm at a loss. It was like cruising on the highway. And went to accelerate and no boost
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06-28-2015, 10:24 PM | #2 |
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Check all of your vacuum lines, and actually pressure test them (see the N54Tech DIY). Then test the boost solenoids.
Are you using a tune of any kind? |
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06-29-2015, 12:47 PM | #6 |
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If your not getting 1 psi out, then it should be pretty damn easy to hear the air leak out.. Did you check the 2 vacuum lines going over the OFH ? while the car is running, pull one vacuum line at a time from the canister and see if you can hear a change in the exhaust tone. report back.
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06-29-2015, 01:52 PM | #7 | |
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06-29-2015, 03:19 PM | #8 |
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Weird....no codes at all. WOT....but no boost map 2 on jb4....I posted a log in N54.....same thread title......vac lines are still connected at OFH .....my vac is reading normal on the gauge...
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06-29-2015, 07:10 PM | #9 |
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06-29-2015, 07:53 PM | #10 |
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06-29-2015, 08:50 PM | #11 | |
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BSM E90 6MT-JB4 G5 ISO-BMS DCI-Golf-Tee Mod-Hankook S1N2 Non-RFT-ER Chargepipe/TiAL BOV-E40 blend-VRSF V2's-M3 CDV-MHD/JB4 FLASH-VRSF 5" STEPPED FMIC
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06-29-2015, 09:01 PM | #12 |
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06-29-2015, 09:07 PM | #13 | |
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Also make sure you have gear 1-2-3 boost set to 0.0 to disable any JB4 control lowering those specific gears targets.
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BSM E90 6MT-JB4 G5 ISO-BMS DCI-Golf-Tee Mod-Hankook S1N2 Non-RFT-ER Chargepipe/TiAL BOV-E40 blend-VRSF V2's-M3 CDV-MHD/JB4 FLASH-VRSF 5" STEPPED FMIC
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06-29-2015, 09:10 PM | #14 | |
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Correct....AL values are as stated. I was boosting just fine on map 2 and then 10 minutes later no boost at all. |
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06-29-2015, 09:13 PM | #15 | |
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Hopefully the guys at N54Tech can find an answer in the logs.
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BSM E90 6MT-JB4 G5 ISO-BMS DCI-Golf-Tee Mod-Hankook S1N2 Non-RFT-ER Chargepipe/TiAL BOV-E40 blend-VRSF V2's-M3 CDV-MHD/JB4 FLASH-VRSF 5" STEPPED FMIC
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