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FlyboyS4
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« Reply #375 on: June 12, 2015, 07:59:07 PM »
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Below is the change to DIMX referred to yesterday, and also the most recent tweak to LDRXN.  These are the results produced. Looks to me that I need to raise LDRXN around 2500 rpm some more. Nef 12c data- just boost onset Here's how AFR is looking with the current tune and weather conditions:  |
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« Last Edit: June 13, 2015, 06:41:22 AM by FlyboyS4 »
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FlyboyS4
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« Reply #376 on: June 14, 2015, 02:41:04 PM »
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Almost there with the requested boost line.  |
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nyet
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« Reply #377 on: June 14, 2015, 04:12:23 PM »
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Looking good! BTW instead of fiddling with IMX to clean up the overshoot, you could increase req load until you get a good req boost taper from 16 psi at 2700 on down, etc. Not sure where that is on the compressor map, though.
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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 #378 on: June 15, 2015, 12:25:49 PM »
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I agree. Don't trim DC, rather bring up request, but even so, that looks pretty solid.
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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!
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FlyboyS4
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« Reply #379 on: June 15, 2015, 07:01:56 PM »
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By continuing to raise the requested line that much I'm not going to cause actual to start rising as well?
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ddillenger
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« Reply #380 on: June 15, 2015, 07:12:02 PM »
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Well yes, a little bit. Are you good with 16psi? I'd shoot for 17, but that's just me.
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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
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FlyboyS4
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« Reply #381 on: June 15, 2015, 07:28:31 PM »
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I'm comfortable with that boost level at low airflow. I'm hoping we are going to be keeping the tune smooth, I think there's some benefit to showing how to develop a refined tune versus one that aims to max out the turbo's and fueling.
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therealnap0le0n
Jr. Member
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« Reply #382 on: June 15, 2015, 07:35:27 PM »
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Well yes, a little bit. Are you good with 16psi? I'd shoot for 17, but that's just me.
What would the highest request be on stock set up while remaining efficient? I think 17-18psi max without overworking the turbos We would be trying to maximize low airflow/ low rpm power due to hardware limits up high |
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(Gmail/Google Chat/Hangouts) - alexswaine(at)gmail(dot)com
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FlyboyS4
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« Reply #383 on: June 18, 2015, 05:18:34 PM »
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Well yes, a little bit. Are you good with 16psi? I'd shoot for 17, but that's just me.
I'm currently using the stock IRL values, I think they'll need to be raised. Does that sound right? |
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nyet
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« Reply #384 on: June 18, 2015, 05:43:14 PM »
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I'm currently using the stock IRL values, I think they'll need to be raised. Does that sound right?
If you have verified that is the limiting factor, then yes. |
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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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FlyboyS4
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« Reply #385 on: June 18, 2015, 05:49:01 PM »
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Not yet. LDRXN is below the max IRL values, but if I am to keep pushing the requested boost up it looks likely that LDRXN will exceed the max IRL values, and I thought they were the cap for LDRXN.
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nyet
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« Reply #386 on: June 18, 2015, 05:50:08 PM »
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Not yet. LDRXN is below the max IRL values, but if I am to keep pushing the requested boost up it looks likely that LDRXN will exceed the max IRL values, and I thought they were the cap for LDRXN.
Again, it isn't that simple because torque request input to IRL isn't generally 100. |
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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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FlyboyS4
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« Reply #387 on: June 18, 2015, 07:13:43 PM »
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I bumped up LDRXN a little more and dropped DIMX some. The resulting req and boost curve look very much like the last one I posted. Thought I'd give that route another try before abandoning the methodology and strictly try to raise the requested line to meet actual. Since the results weren't very progressive I'll look at a more aggressive LDRXN curve around the boost ramp range.
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therealnap0le0n
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« Reply #388 on: June 18, 2015, 07:47:11 PM »
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I haven't been keeping up with your latest changes Jeff since last time we spoke (far too busy with work/family), but just for reference I was having that 20PSI spike on initial throttle, I dropped I max down to stock and my car now goes to 16psi ( +1 psi of request ) very briefly, and then follows requested to the dot until about 5500rpm where the taper continues to follow requested at +1 psi again. You may not need as much DIMX as we intially thought.
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FlyboyS4
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« Reply #389 on: June 19, 2015, 04:40:18 PM »
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I haven't been keeping up with your latest changes Jeff since last time we spoke (far too busy with work/family), but just for reference I was having that 20PSI spike on initial throttle, I dropped I max down to stock and my car now goes to 16psi ( +1 psi of request ) very briefly, and then follows requested to the dot until about 5500rpm where the taper continues to follow requested at +1 psi again. You may not need as much DIMX as we intially thought.
I'll keep that in mind as I progress. For the moment I'm trying to up the requested line as Daz & Nye suggested. This'll be my last update for a couple weeks as I have some other activities to attend to. Here's the new LDRXN, black line, and below it the results (csv file) it is producing.  Nef-12-f data |
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