16g-95gsc
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« on: April 26, 2013, 05:27:36 PM »
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I just modified my tune to finally take advantage of my 52lb injectors and turn up the wick with regards to boost. I adjusted all of the boost maps that I felt were necessary (simplifying corrections such as IAT, broading LDR limits, etc) and yet boost spikes to maybe 18psi falling almost immediately to 7-9psi and then holding to redline. I am at a loss as to what could be causing it.
Please take a look and see if you can catch anything that may be causing this. From everything I can gather boost should be hitting around 23psi as dictated by LDRXN, and KFMIOP should be modified so that there are no unnecessary torque interventions.
Mods:
K04's
3" Downpipes with no Cats
SSAC catback
034 motorsports 85mm maf housing
Hitachi sensor
K&N Panel filter
710N DV's
52lb EV14 injectors
Any help?
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nyet
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« Reply #1 on: April 26, 2013, 06:36:52 PM »
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Logs please...
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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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ddillenger
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« Reply #2 on: April 26, 2013, 06:42:10 PM »
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I just modified my tune to finally take advantage of my 52lb injectors and turn up the wick with regards to boost. I adjusted all of the boost maps that I felt were necessary (simplifying corrections such as IAT, broading LDR limits, etc) and yet boost spikes to maybe 18psi falling almost immediately to 7-9psi and then holding to redline. I am at a loss as to what could be causing it.
Please take a look and see if you can catch anything that may be causing this. From everything I can gather boost should be hitting around 23psi as dictated by LDRXN, and KFMIOP should be modified so that there are no unnecessary torque interventions.
Mods:
K04's
3" Downpipes with no Cats
SSAC catback
034 motorsports 85mm maf housing
Hitachi sensor
K&N Panel filter
710N DV's
52lb EV14 injectors
Any help?
I sent you that ecu. lol. |
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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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16g-95gsc
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« Reply #3 on: April 26, 2013, 06:50:26 PM »
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Haha, did you really? It just showed up today and fired up great just as I had hoped my tune would. I tweaked fueling a bit to get trims in check, but boost ultimately is not where it needs to be. SUCKS, as I was desperately trying to take it to the track tonight for a big alumni weekend and show up a lot of friends.
I don't have any logs currently other than VCDS, which has an ungodly terrible sample rate.
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nyet
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« Reply #4 on: April 26, 2013, 07:09:36 PM »
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Don't bother doing any tuning until you have a proper logging setup.
Much easier to see what is going on than to dig through our bin and guess
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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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black
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« Reply #5 on: April 27, 2013, 08:11:27 AM »
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Don't bother doing any tuning until you have a proper logging setup.
Much easier to see what is going on than to dig through our bin and guess
Yes, of course! Digging a bin file maybe possibly useless unless you see whats going on with the variables while driving. |
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16g-95gsc
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« Reply #6 on: April 28, 2013, 09:54:51 AM »
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I will get on it today. What parameters would you suggest would best help capture what may be going on?
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ddillenger
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« Reply #7 on: April 28, 2013, 10:26:03 AM »
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I hope you don't mind, but I looked at your file. KFLDHBN needs to be increased. I'd bet that's holding you back.
FYI, I don't think that that file's safe at all. If you ask me to critique it I will.
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« Last Edit: April 28, 2013, 10:34:19 AM by ddillenger »
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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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16g-95gsc
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« Reply #8 on: April 28, 2013, 03:43:41 PM »
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Feel free to critique, I'll never learn unless I get feedback from those who have done this before.
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16g-95gsc
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« Reply #9 on: April 28, 2013, 03:52:24 PM »
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BTW, you may be on to something with KFLDHBN, those values are completely stock, which would be extremely limiting for sure.
I have tuned MANY ecu's over the years, the ME7 just is another creature in and of itself for sure. It's been a steep learning curve trying to wrap my head around a different way of thinking. Please feel free to let me know your thoughts, I have fairly thick skin and understand that I left many things more widened than they could be when optimized.
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ddillenger
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« Reply #10 on: April 28, 2013, 04:20:14 PM »
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I'd pull about 6 degrees of timing at high load/rpm points, I forsee MASSIVE cf's if not. Start conservative, dial it in. That, and unless the maf is underscaled I forsee limp. I'll look the rest over shortly!
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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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nyet
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« Reply #11 on: April 28, 2013, 08:32:03 PM »
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Logs please.
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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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16g-95gsc
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« Reply #12 on: April 29, 2013, 05:41:11 AM »
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I'll try to take it out and get some actual ME7 logger logs after work today. FWIW KFLDHBN was the trick, I need to dial it back a fair bit and begin slowly making it more aggressive.
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16g-95gsc
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« Reply #13 on: April 29, 2013, 03:51:23 PM »
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Took a quick log today. Boost is hitting just as I had requested, no limp mode, MAF maxes around 344g/s, with knock values reaching around -6 degrees at 5000rpm.
Take a look and tell me what you think.
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nyet
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« Reply #14 on: April 29, 2013, 03:57:04 PM »
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requesting too much boost too soon; you might throw positive deviation
you are over boosting past MAP limit .. probably need to adjust i-limit
your requested AFR is ridiculously rich .. adjust BTS
you are requesting too much timing up top. as boost comes down, that might fix itself.
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« Last Edit: April 29, 2013, 03:59:16 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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