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nyet
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« Reply #15 on: March 20, 2015, 12:47:00 PM »
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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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majorahole
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« Reply #16 on: March 20, 2015, 12:47:23 PM »
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Most common (this should be a FAQ lol it applies to just about all turbo cars): - Intake leak (pressure test)
- DV leak (compare ps_w to actual boost)
- Collapsing inlet (pretty much all 1.8ts suffer from this)
- Faulty N75 or wg not holding (unhook wg line so it is at atm and see if you get boost.. carefully!)
- Clogged cats
- Turbo lady
I have an intake and a 3" catless downpipe. so that rules those out. I will make a cap to pressure test tomorrow hopefully and if that doesn't reveal the culprit, then I'll move onto the n75 |
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nyet
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« Reply #17 on: March 20, 2015, 12:48:44 PM »
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Don't waste your time. I should have added "check your turbo's compressor 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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majorahole
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« Reply #18 on: March 20, 2015, 12:48:52 PM »
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Pardon my french, but WTF are you doing?
uhhh... at work right now?? |
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majorahole
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« Reply #19 on: March 20, 2015, 12:49:45 PM »
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really?? it would overboost previously?
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prj
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« Reply #20 on: March 20, 2015, 12:51:52 PM »
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uhhh... at work right now??
You did not answer my question. Why are you targeting 1.55 bar on an engine with a K03 and 10.5 CR? You want to poke some holes in the block or what is your target? Thank god the actuator from factory is soft enough and they have a common fault with the actuator loosening up. But you'd probably grenade your engine if it ran target. Be happy it's in one piece. Also your HPFP will never allow it to run that in the midrange... I could go on and on and on. Please STOP and THINK. |
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majorahole
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« Reply #21 on: March 20, 2015, 01:10:57 PM »
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well originally I wasn't trying to peak in the midrange, but when it started not hitting specified I was upping it to see if it would ever hit full boost. my lambda is .82-.79 with very conservative timing. i was under the impression that most off the shelf stage 2 tunes were requesting and hitting 2550, from seeing other logs. yes the hpfp does dip in that range sometimes, but other times it holds the 120bar requested.
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majorahole
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« Reply #22 on: March 20, 2015, 01:47:50 PM »
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and before I was attempting to troubleshoot my requested was 2550mbar until 2500rpm then drops down to 2200-2300mbar until 4500 and tapers to 1120 by redline. didnt think I was pushing it too hard
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prj
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« Reply #23 on: March 20, 2015, 01:59:55 PM »
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No, most tunes don't run 1.5 bar on K03.
And yes you were pushing it too hard.
HPFP dips = you already have too much boost and in colder weather you are going to have issues.
Put in a sane boost request (max 1.2-1.3 bar) and post logs.
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majorahole
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« Reply #24 on: March 20, 2015, 03:14:43 PM »
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from what I can find, all stage 2 tunes spike from 19-23psi and then settle to around 16-18psi and taper to 13-15 by redline. whether its actually requested or not, I'm not sure. last year I ran a somewhat similar boost profile last year, but mine would taper to 9psi. because my hbn was defined backwards. from some peoples logs I can find on forums is that 2550 is requested before the turbo can actually spool it, but then. drops before the actual meets it, but it overshoots for the spike.
I will lower my request and log and post the results. after being able to inspect a lil bit better I can see what looks like oil spray on the tray below the intercooler hose connection.
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prj
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« Reply #25 on: March 20, 2015, 04:39:39 PM »
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from what I can find, all stage 2 tunes spike from 19-23psi and then settle to around 16-18psi and taper to 13-15 by redline. whether its actually requested or not, I'm not sure. last year I ran a somewhat similar boost profile last year, but mine would taper to 9psi. because my hbn was defined backwards. from some peoples logs I can find on forums is that 2550 is requested before the turbo can actually spool it, but then. drops before the actual meets it, but it overshoots for the spike. And you consider this good tuning? The HPFP dips in pressure above 1.3 bar in midrange on a K03 car and above 1.4 bar in midrange on a K04 car. Even with brand new followers. If you're not trying to run lambda 1 at 1.5 bar of course. |
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ddillenger
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« Reply #26 on: March 20, 2015, 05:38:11 PM »
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i was under the impression that most off the shelf stage 2 tunes were requesting and hitting 2550, from seeing other logs. yes the hpfp does dip in that range sometimes, but other times it holds the 120bar requested.
Please try not to get hung up on what everyone else does. This is a very dangerous way of thinking. There are many factors to take into consideration (fueling, temperature, egts, your compressor map, etc). More isn't always the answer. |
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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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majorahole
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« Reply #27 on: March 20, 2015, 06:10:54 PM »
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ok, thank you both for your help and advice I do appreciate it.
I was unable to find a good tuned file here to get an idea of what should be done, so I went looking at logs of the retail tunes. and I wasn't really sure how the me7 stuff would compare. they have smaller displacement(1.8t) and turbo is slightly smaller too (I guess mines a k03s). I will def be reevaluating my file.
while I'm thinking of it, something else I couldn't find , i assume cuz the s4's a4's would never have this issue, is that power seems down right after a shift. like I NEVER have chirped my tires even shifting as fast as i can. it seems kind of weird and that it could slow down acceleration
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prj
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« Reply #28 on: March 21, 2015, 03:15:50 AM »
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ok, thank you both for your help and advice I do appreciate it.
I was unable to find a good tuned file here to get an idea of what should be done I don't mean to be rude, but if you can't take an engine and by fiddling with the management find out what it likes, then you have no business tuning any cars. I appreciate you are learning, but you are doing this completely the wrong way. Maybe it would be better to start with carburettors and understanding of various boosted engines, and only after you understand the hardware and the mechanics of an ICE to fiddle with an extremely complex injection system. By copy pasting other stuff you will just copy paste the mistakes of others and never achieve anything great. Don't think for a second, just because someone is "famous" that they have any idea of what they are doing. |
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« Last Edit: March 21, 2015, 03:17:39 AM by prj »
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majorahole
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« Reply #29 on: March 21, 2015, 07:51:49 AM »
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edited
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