romano21
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« on: August 10, 2019, 12:21:59 PM »
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Hello all !
i made and make tune onTwo S3 with GT2871 one work perfectly have full boost at 4200RPM
the other one have a problème with same hardware i have full boost at 5250rpm it have a terrible lag
hardware for both car is same juste one have turbo top mount and other rear mounted.
motor : APY
E85
GT2871 AR.064
850CC siemens deka
DW65V
blow off valve forge
stock intercooler
76MM exhaust
N249 delete
connecting rod forged
and ohter...
both cars had an engine rebuild with new spare timing chain... tensioner... connecting rod bearing , crankshat bearing , piston ring and lot of sensor , gasket ... bearing.. ( mass air flow , N75J ) etc...
i tested a lot of things
BOOST LEAK and check valve
NEW TURBO ... ( first is ball bearing and new journal bearing ) same problem
OTHER N75 OTHER BLOW OFF VALVE (despite the parts are new ...)
timming check
check wastegate
disconnected hose of wasegate...
i don't know wath going on
anyone already had a same problem ?
sorry for my bad english
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vwaudiguy
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« Reply #1 on: August 10, 2019, 03:51:25 PM »
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Can you post logs of both cars using ME7L?
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
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Blazius
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« Reply #2 on: August 11, 2019, 01:41:07 AM »
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Since one is different mount I bet you are using different downpipe and other intake setup. But yes logs would be a start from the cars on the same piece of road.
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adam-
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« Reply #3 on: August 11, 2019, 04:37:41 AM »
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If DC is at 95% there is nothing you can do.
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romano21
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« Reply #4 on: August 11, 2019, 12:39:41 PM »
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unfortunately I do not have access to the log for the moment of the second S3 which works well. my friend lives far away and lost are driving license.
for the exhaust assembly and intake I also built a golf 4 1.8T engine AGU with this configuration. ride in the back and I have no problem with it full boost also around 4200 rpm
i made a log of my N75DC
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fknbrkn
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mk4 1.8T AUM
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« Reply #5 on: August 11, 2019, 03:07:10 PM »
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You can add more than one var into the graph btw
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nyet
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« Reply #6 on: August 11, 2019, 04:14:57 PM »
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Please post the original log
also you dont have to post a screenshot you can use file->export
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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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romano21
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« Reply #7 on: August 13, 2019, 08:29:00 AM »
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thank's for your response nyet wath log you want ? the originals of those I already post?
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aef
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« Reply #8 on: August 14, 2019, 02:17:33 AM »
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yes files, not pictures  |
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romano21
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« Reply #9 on: October 02, 2019, 07:57:08 AM »
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Hello after long time because have a lot of work and no time for working on my S3 i found a crack on my intake manifold and replace all check valve boost lag it's ok for now! thank's for your help.
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BlackT
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« Reply #10 on: October 02, 2019, 07:59:04 AM »
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Crack on OEM manifold?
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