fknbrkn
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mk4 1.8T AUM
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« Reply #60 on: February 12, 2016, 07:20:27 AM »
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could this be a reason of knocking -> retarding ?
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carsey
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« Reply #61 on: February 12, 2016, 05:09:26 PM »
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Could well be if things are out
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elav
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« Reply #62 on: February 23, 2016, 11:22:11 AM »
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had you try new knock sensor, or new knock wiring?
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carsey
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« Reply #63 on: February 26, 2016, 05:29:22 AM »
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The 2 knock sensors were brand new dealer items when engine build ~2000miles ago
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aef
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« Reply #64 on: February 26, 2016, 05:49:24 AM »
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correct mounted with 20nm
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carsey
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« Reply #65 on: February 28, 2016, 11:24:27 AM »
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Had chance to have another bit play today. Car feels looks better.
Couple of logs.
161108.csv is the last run I did with adding a touch timing to the bottom row of the timing maps.
155309.csv is the log I done after I reset the VVT/camshaft map back to stock settings.
160912.csv is a file before I messed around with the engine timing so the value was -8 on block 093.
Whats peoples thoughts?
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carsey
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« Reply #66 on: March 01, 2016, 11:31:38 AM »
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Anybody any comments?
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nyet
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« Reply #67 on: March 01, 2016, 11:39:44 AM »
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Are you using an MBC? If so, ditch it.
Also, pull a lot more timing, especially at high load, low rpm
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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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carsey
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« Reply #68 on: March 01, 2016, 11:45:55 AM »
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Just open loop boost control.
155309.csv is a log before I done a couple timing changes. Did notice the higher CFs at low loads on turbo spool, so will probably pull that out a touch. Top end and midrange seems good though?
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nyet
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« Reply #69 on: March 01, 2016, 11:47:39 AM »
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Just open loop boost control.
Eventually you'll get an over or under boost code. 155309.csv is a log before I done a couple timing changes. Did notice the higher CFs at low loads on turbo spool, so will probably pull that out a touch. Top end and midrange seems good though?
try to get all CFs zero first. Then add until you get any cyl non-zero. Stop there. |
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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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carsey
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« Reply #70 on: March 01, 2016, 11:52:57 AM »
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Im happy with open loop. Its the way my tuner mapped it originally on the stock anti surge K04-064. Its a track car so its rarely used, and even then its just on weekends for a drive out.
It'll be going back to them for final tweaks as I dont trust myself when it will be getting hammered round a track for 20mins at a time, so rather know everything is tip top condition. Just want a safe map and one I can experiment on with what power I can get before finalising it with a tuner.
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byzan a4
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« Reply #71 on: March 01, 2016, 12:56:46 PM »
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I did look into it.
Originally had a vernier on there....replaced for stock pulley and code persisted. Cams lined up 100%, 16 rollers, timing bottom end and top marks were perfect.
Looking at it now, and putting a second tensioner in to try fix the problem, I can have the 2 marks lined up with 16 rollers, but then if you allow the VVT tensioner to fill with oil, It can move the inlet camshaft 1 tooth forwards so that it no longer lines up with the hole. Push the chain back down and the markers on the cams/caps line up again.
So im stuck until I can find out where the chain needs to be to be timed up...since it can differ by quite a bit
its 16 rollers with the tensioner at it's fully upright position as if it's full of oil . -9 is too high on standard cams, I have however seen it on performance cams. Mine for instance runs at -11CF and doesn't throw a code |
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carsey
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« Reply #72 on: March 01, 2016, 02:48:47 PM »
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Yeah. Wonder how much you can be out when the plunger is depressed or fully up. Sorted now though and checked with VCDS. Having it at 0* the car was totally different, when the VVT switched over it was like V-tec kicking in, engine note change and went mental. Put stock VVT on and boost dropped 2-3psi.....a sign of the engine consuming the air produced by the turbo for less effort  |
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carsey
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« Reply #73 on: March 02, 2016, 10:07:44 AM »
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Had a look at my timing map last night, noticed it wasnt smooth, so set to work taking a touch timing out on spool 3-4k and smooth it out.
Also noticed that the last 3x rows in the file I pulled off ECU were identical, so set my map the same as this. I guess this is the ensure that the value does not change from interpolating.
Question....how much does the timing map interpolate and how much can the actual figure for a load/rpm site change?
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nyet
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« Reply #74 on: March 02, 2016, 10:13:56 AM »
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Question....how much does the timing map interpolate
Linear interpolation how much can the actual figure for a load/rpm site change?
I have no idea what you're asking. If you are asking about map resolution, it's usually 0.75 or 1.25 degrees depending on the file. YMMV, it is trivial to find out. In winols, +/- key will increment/decrement in minimum steps. Alternately, look at the scaling of the variable in the map definition. That is LITERALLY the resolution of the map. |
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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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