mounty
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« on: September 04, 2014, 08:53:31 AM »
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01 awp tt.
Car runs as it should for the most part. Idles good. Daily drives good. No misfires.
Full vacuum at 20hg. I'll get full boost up until about 4k rpm. After that it will drop to 5psi between 5500 and 6000.
I've done a few vcds logs. Timing is alright. It never closes the throttle plate as it will read 100%
I've checked for leaks. I found one aftermarket coupler that was dry rotted a little bit. Replaced it and it's no different.
I've clamped the vav/boost source for the n75 and no difference.
I've clamped the wastegate feed from n75. No difference.
I've clamped the feed to my diverter valve and no difference.
I can move the wastegate by hand maybe 2-5 mm so I went and jammed a screw driver in there and it's still the same.
What can I be missing? Has no vac leaks. Will pull 22hg on deceleration.
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« Last Edit: September 05, 2014, 08:44:07 AM by mounty »
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nyet
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« Reply #1 on: September 04, 2014, 10:10:01 AM »
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Logs?
Sounds like clogged cats, overly restrictive intake, clogged IC, or bad turbo :/
Or possibly in intake hose is collapsing?
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« Last Edit: September 04, 2014, 04:03:01 PM by nyet »
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease 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 ex
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mounty
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« Reply #2 on: September 04, 2014, 10:38:04 AM »
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I'll try to post logs left laptop at garage.
I have no cat. 3.5 inch open downpipe.
I haven't checked the intercooler yet.
No air filter. Doubt my intake is collapsing. I don't have stock one.
More ideas??
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nyet
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« Reply #3 on: September 04, 2014, 10:56:01 AM »
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Did you check the compressor map? Perhaps your turbo can't pump any more and is out of its efficiency range.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease 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 ex
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overspeed
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« Reply #4 on: September 04, 2014, 01:56:58 PM »
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I had a lot of problens with inlet collapsing, even some with good brands (SAMCO, AUTOBAHM, FORGE) becasue they were a little bend next turbo intake..and some was bad clone china crap buyed at Aliexpress
recheck it, take out MAF and filter and make a pull if you reach some bigger pressure - even minor efects (I would see g/s too) it can indicate that is closing at any air flow
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adam-
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« Reply #5 on: September 04, 2014, 03:42:52 PM »
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This makes me depressed about my Aliexpress reducer!  |
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mounty
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« Reply #6 on: September 04, 2014, 07:22:24 PM »
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I'll remove the intake completely and run without the maf to test that theory.
I know this turbo used to peak at 25 and redline at 16 or so. And 5psi is just depressing.
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masterj
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« Reply #7 on: September 04, 2014, 10:44:25 PM »
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isn't ~5psi a hard limp mode?
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nyet
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« Reply #8 on: September 04, 2014, 10:55:57 PM »
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isn't ~5psi a hard limp mode?
If he crimped the WG line and logged the throttle plate..... |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease 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 ex
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mounty
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« Reply #9 on: September 05, 2014, 12:17:41 AM »
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5 psi is a limp mode. But this is not limp mode. My experience with limp mode on this car is once it goes into limp mode I'll have to clear codes to get normal boost back. I can't start over from a stop and have 20 psi till 4300 ish. At least the turbo I'd replace it with isn't too much I guess.
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mounty
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« Reply #10 on: September 05, 2014, 12:18:43 AM »
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If he crimped the WG line and logged the throttle plate.....
Plus the logs showed 100% Not 25-30 like when in limp mode. |
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ddillenger
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« Reply #11 on: September 05, 2014, 12:34:38 AM »
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Need help.
Have logs.
Post logs.
Get help.
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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!
Email/Google chat:
DDillenger84(at)gmail(dot)com
Email>PM
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mounty
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« Reply #12 on: September 05, 2014, 03:01:42 AM »
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Going to garage after work to grab laptop with logs.
Anything else I should log that might help?
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mounty
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« Reply #13 on: September 05, 2014, 06:11:22 AM »
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25 psi never felt so good!!!
Nyet wins. Don't go cheap on your turbo inlet pipe guys.
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nyet
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« Reply #14 on: September 05, 2014, 09:29:17 AM »
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SWEEET.
Glad you worked it out.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease 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 ex
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