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Bische
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« Reply #105 on: November 26, 2012, 11:52:00 AM »
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So I have been running the 5120 hack for some time now, been working on different flanks of my tune -logging flashing driving everyday(its my daily driver). Everything just works as it used to, except for one thing, the cold start idle. Either it does what I captured on the log I uploaded(maybe 1/10 times), but almost every time it just revs up to ~1400 and falls right back down to my idle rpm which is 900rpm. It is running rough during the rev up, like the 0.5sec it takes to rev up after ignition, then snaps back down to idle and running flawless. I think I have found what is causing it though, KFWDKPP - one of the inputs to this map is not correctly scaled because of a 1013atm division, fpvdkds. So I have scaled the axis accordingly, multiplied it by 2:  Been going back and forth whether Im ordering a 4bar MAP sensor now or not, im afraid my stock block wont take much more boost anyway, im running 20.5psi ramping to 22psi after ~4700rpm -where my torque peaks. Also attached a 3rd pull graph showing ps_w doing its business, the requested looks a bit wavy as I had some ASR activity during that pull. |
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prj
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« Reply #106 on: November 26, 2012, 01:17:57 PM »
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You are doing great.
I will look into that division when I have time, maybe provide an ASM hack for it.
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nyet
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« Reply #107 on: November 26, 2012, 01:45:01 PM »
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Outstanding. I can't wait to try this out.
Any chance you can regularly update a stock M file with ONLY the MAP changes?
That way I can make sure I have a mappack ready for it.
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matchew
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« Reply #108 on: November 26, 2012, 02:11:21 PM »
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Any chance you can regularly update a stock M file with ONLY the MAP changes?
He is working with an M file. I think I have found what is causing it though, KFWDKPP - one of the inputs to this map is not correctly scaled because of a 1013atm division, fpvdkds. So I have scaled the axis accordingly, multiplied it by 2:
Change 0x5F017 from 0x34 to 0x44, this halves the load axis look up ram value. Change the axis back to stock. Let me know. |
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« Last Edit: November 26, 2012, 02:19:49 PM by matchew »
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jooo
Jr. Member
Karma: +0/-1
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Posts: 30
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« Reply #109 on: November 26, 2012, 03:08:25 PM »
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It would be best if all this work would be based on the 4bar sensor. Then there would be margin for the few guys that work with high boost, without the need to hack this hack again.
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jibberjive
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« Reply #110 on: November 26, 2012, 03:19:19 PM »
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I'm pretty sure it's just double the stock value, which is above 4 bar if I've read everything right.
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nyet
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« Reply #111 on: November 26, 2012, 03:30:23 PM »
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Yes. The point to this project is to have a file that will work up to a 5bar MAP
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britishturbo
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« Reply #112 on: November 26, 2012, 09:07:15 PM »
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So to work for a 4 bar map we would just use 1.6 as the ratio compared to stock rather than 2 and 633 instead of 1013 right?
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Bische
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« Reply #113 on: November 26, 2012, 09:08:44 PM »
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You are doing great.
I will look into that division when I have time, maybe provide an ASM hack for it.
Thanks  Outstanding. I can't wait to try this out.
Any chance you can regularly update a stock M file with ONLY the MAP changes?
That way I can make sure I have a mappack ready for it.
I am working on a 1.8t, 8E0909518M He is working with an M file.
Change 0x5F017 from 0x34 to 0x44, this halves the load axis look up ram value. Change the axis back to stock.
Let me know.
Thanks again, I tried this out and now it just did like what it did in the log I uploaded. DK oscillates the first ~20sec, then i had cold start idle RPM. I think we need to half the top and bottom 1013's on this page in addition to the fho_w one you helped me with:  |
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« Last Edit: November 26, 2012, 09:47:57 PM by Bische »
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matchew
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« Reply #114 on: November 26, 2012, 09:42:58 PM »
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I think we need to half the top and bottom 1013's on the page also:
The bottom one doesn't exist for reasons that you should be able to tell by looking at the pic you posted. The top one can be halved by changing the following bytes: 0x6A3F2 - Change from 0x87 to 0x0E 0x6A3F3 - Change from 0x02 to 0x05 0x6A22E - Change from 0x87 to 0x0E 0x6A22F - Change from 0x02 to 0x05 I think there a few other places you need to do this too. |
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« Last Edit: November 26, 2012, 09:58:34 PM by matchew »
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Bische
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« Reply #115 on: November 26, 2012, 10:09:36 PM »
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You are right, im stupid  Thanks, I will test that out and report back! |
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prj
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« Reply #116 on: November 27, 2012, 01:16:15 AM »
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So to work for a 4 bar map we would just use 1.6 as the ratio compared to stock rather than 2 and 633 instead of 1013 right?
No, for a 4 bar MAP you only need to change DSLGRAD and DSLOFS. Read this thread through before asking questions or people will soon get pretty grumpy at you. |
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nyet
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« Reply #117 on: November 27, 2012, 02:25:32 AM »
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I was hoping for a 2.7t M box
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Bische
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« Reply #118 on: November 27, 2012, 03:17:49 AM »
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I was hoping for a 2.7t M box
Yes, I figured. I feel we are pretty close to the goal now, then we need to wrap it up and figure out a smart way to hack the ASM for the 1013 divisions(if there is a way besides to disassemble each and every file?). Then I guess it is wiki time, but I dont feel like it is a good idea to prepare files with this hack and upload for everyone to use, at least not at this point. It would be very good if at least one or two more persons trace the diagrams and implement the hack themselfs, there is likely stuff I have overlooked that someone more experienced may pick up. When I get to the bottom with the cold start issue I will update my map list. |
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britishturbo
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« Reply #119 on: November 27, 2012, 05:04:37 AM »
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No, for a 4 bar MAP you only need to change DSLGRAD and DSLOFS.
Read this thread through before asking questions or people will soon get pretty grumpy at you.
Well gee. I'm sorry I have read the thread and must have missed that. I'll read again... |
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