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Author Topic: k04 upgrade on 2.0TFSI AXX gone bad  (Read 10552 times)

Offline antonis42

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k04 upgrade on 2.0TFSI AXX gone bad
« on: February 16, 2011, 11:26:29 am »
k04 upgrade on 2.0TFSI AXX gone bad
http://etuners.gr/index.php?s=12&t=220
tuners claim culprit was N75 valve.
english version here: http://etuners.gr/en/index.php?s=12&t=220


« Last Edit: February 16, 2011, 11:41:54 am by antonis42 »
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Offline muckipup

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Re: k04 upgrade on 2.0TFSI AXX gone bad
« Reply #1 on: February 16, 2011, 11:51:13 am »
Quote from: antonis42 on February 16, 2011, 11:26:29 am
k04 upgrade on 2.0TFSI AXX gone bad
http://etuners.gr/index.php?s=12&t=220
tuners claim culprit was N75 valve.
english version here: http://etuners.gr/en/index.php?s=12&t=220




Interesting read!  I also like the way these guys go forensic on a problem like CSI Athens  :happy2:
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Re: k04 upgrade on 2.0TFSI AXX gone bad
« Reply #2 on: February 16, 2011, 12:10:04 pm »
ouch... such a simple thing leads to such catastrophe!  :scared:
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Offline RedRobin

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Re: k04 upgrade on 2.0TFSI AXX gone bad
« Reply #3 on: February 16, 2011, 12:48:33 pm »
^^^^
Scary!  :scared:
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Offline MAT ED30

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Re: k04 upgrade on 2.0TFSI AXX gone bad
« Reply #4 on: February 16, 2011, 12:57:50 pm »
one word (oops) i bet the guy who fitted the turbo got told off  :fighting:
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Offline mo

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Re: k04 upgrade on 2.0TFSI AXX gone bad
« Reply #5 on: February 16, 2011, 01:17:02 pm »
Something doesnt quite sit right here......
The thing i find hard to believe tho is that the ecu didnt cut the engine once max boost was exceeded.
Also doesnt the N75 just stop boost from hitting the standard wastegate, ie if the N75 fails then the spring on the wastegate will just open at the 0.6 bar or whatever its set to ?
Sounds more like a stuck wastgate to me or a dodgy map?
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Offline neg

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Re: k04 upgrade on 2.0TFSI AXX gone bad
« Reply #6 on: February 16, 2011, 02:05:02 pm »
I had a dodgy N75 once on a 1.8T - just kept causing limp mode.  Maybe its different when its working but broken off rather than just not working correctly.  Expensive mistake though.
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Offline mo

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Re: k04 upgrade on 2.0TFSI AXX gone bad
« Reply #7 on: February 16, 2011, 02:09:36 pm »
Yeah very.
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Offline GTIjames

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Re: k04 upgrade on 2.0TFSI AXX gone bad
« Reply #8 on: February 16, 2011, 02:33:21 pm »
good read, interesting on what they say about tampering with the wastegate..

i fitted for the forge ko4 actuator on mine and it must have been done up to tite as I was seeing boost hit 28-30psi and higher which eventually ended in this



was fooking quick though  :innocent:
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Re: k04 upgrade on 2.0TFSI AXX gone bad
« Reply #9 on: February 16, 2011, 02:54:45 pm »
Very interesting read.  :happy2:
« Last Edit: February 16, 2011, 02:58:49 pm by Saint Steve »
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Offline neg

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Re: k04 upgrade on 2.0TFSI AXX gone bad
« Reply #10 on: February 16, 2011, 02:54:53 pm »
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Offline ongoing

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Re: k04 upgrade on 2.0TFSI AXX gone bad
« Reply #11 on: February 16, 2011, 03:34:16 pm »
Quote from: GTIjames on February 16, 2011, 02:33:21 pm
good read, interesting on what they say about tampering with the wastegate..

i fitted for the forge ko4 actuator on mine and it must have been done up to tite as I was seeing boost hit 28-30psi and higher which eventually ended in this



was fooking quick though  :innocent:

Ouch that don't look good.

Bet it was quick though  :driver:
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Offline muckipup

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Re: k04 upgrade on 2.0TFSI AXX gone bad
« Reply #12 on: February 16, 2011, 05:12:24 pm »
Yeah, the first thing I thought of was a stuck actuator and my thoughts went to Hurdy and others with the Forge product. Most folks seem to have set them up carefully and sensibly though. This is the first I have heard where damage was done...nice boost levels though  :laugh:
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Offline danishmkvgti

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Re: k04 upgrade on 2.0TFSI AXX gone bad
« Reply #13 on: February 16, 2011, 06:32:50 pm »
Must be a SW fault rather than N75 fault IMO
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Offline Hurdy

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Re: k04 upgrade on 2.0TFSI AXX gone bad
« Reply #14 on: February 16, 2011, 07:05:22 pm »
Quote from: muckipup on February 16, 2011, 05:12:24 pm
Yeah, the first thing I thought of was a stuck actuator and my thoughts went to Hurdy and others with the Forge product. Most folks seem to have set them up carefully and sensibly though. This is the first I have heard where damage was done...nice boost levels though  :laugh:

Took a while to get mine set up correctly at Statllers, but although it took some time I wanted it right. Literally a single turn either way on the actuator thread with the locking nut can give poor boost or too much. :happy2:
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