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Author Topic: 2.7 biturbo overboosting  (Read 6894 times)
majsterx
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« on: December 03, 2015, 03:19:28 AM »

Hello, everyone.

I have problem with my 2.7T, my workshop can't help with this problem. I resolve better issue with power and EGT.
Replacing sensor, new turbos installed, new DV's. Now car have power, but another problem before was really underboosted but now i have 500mbar over... So car is not using now.
And think wastegate in turbos don't work (actuator is new and pipes), car have very strong vaccum so possible some problem with steering valves.

Where i find vaccum valves steering wastegate actuator ? What's number they have, and what's for look behind it, maybe there is problem..
No experience in 2.7T mechanic don't help me, to much valves anywhere :-)



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majsterx
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« Reply #1 on: December 03, 2015, 07:37:05 AM »

I think that's this one and steering both turbochargers

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majsterx
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« Reply #2 on: December 03, 2015, 08:22:03 AM »

I make one test, disconnect N75... and then boost = 1010mbar, nothing more
connecting.. and always get 1400, 1600. In high rpm even peak to 2430mbar !

Vaccum should be allright, so probably my N75 valve is broken ?
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nyet
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« Reply #3 on: December 03, 2015, 11:01:11 AM »

Is the car stock?
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ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
majsterx
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« Reply #4 on: December 04, 2015, 02:56:25 AM »

No, stock too have overboost.
Tuned.
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dream3R
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« Reply #5 on: December 06, 2015, 10:15:09 PM »

does sound like WG sticky
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How to work out values from an A2L Smiley

http://nefariousmotorsports.com/forum/index.php?topic=5525.msg52371#msg52371


Starting Rev's http://nefariousmotorsports.com/forum/index.php?topic=5397.msg51169#msg51169

noobs read this before asking http://nefariousmotorsports.com/forum/index.php?topic=9014.0title=


ORGORIGINAL 05 5120 creator for Volvo
ORIGINAL Datalogger (Freeware) Author
ORGINAL finder of the 'extra' torque' limits
I don't have ME7.01 A2L I just use ID
nyet
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« Reply #6 on: December 07, 2015, 10:49:55 AM »

Post a log (ME7Logger).

Please post the original .csv, not an xls or something equally stupid.
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ME7.1 tuning guide (READ FIRST)
ECUx Plot
ME7Sum checksum checker/corrrector for ME7.x

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
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