Jason
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« Reply #15 on: August 14, 2010, 10:36:59 AM »
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In case anybody here is interested, here is a picture of the pigtail arrangement so I can quickly throw the ECU into boot mode:  This is my "development" ECU so when I am done with tuning I will replace it with an unmodified ECU. |
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NicolasThe3rd
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« Reply #16 on: August 14, 2010, 05:22:57 PM »
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Jason, Any more pictures, instructions, details and whatnot on how to do this? Please excuse my newbyness, but we all got to start somewhere  |
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Jason
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« Reply #18 on: August 16, 2010, 07:26:46 AM »
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I will get some pictures tonight. It's pretty easy.
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NicolasThe3rd
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« Reply #19 on: August 16, 2010, 07:41:59 AM »
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I will get some pictures tonight. It's pretty easy.
Thank you Jason! ...I'm aware that mostly all the information on tuning ECU's is available if I search for it, and I do, but it's scattered all over the internet. Without any structure, it's hard to retain what information is relevant, or not, for my application when reading on the subject. Take boot mode for example, I've seen this before, somewhere, on some forum. But I can't seem to find that useful page that I stumbled upon randomly before. |
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NicolasThe3rd
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« Reply #20 on: August 16, 2010, 12:58:06 PM »
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So I've been browsing all afternoon on the subject, and i guess what I'm trying to figure out is: Is it possible to install a switch that would put the ECU into boot mode - while still installed in the car? Enabling me to read/write via the diag port.
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Tony@NefMoto
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« Reply #21 on: August 16, 2010, 01:24:47 PM »
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So I've been browsing all afternoon on the subject, and i guess what I'm trying to figure out is: Is it possible to install a switch that would put the ECU into boot mode - while still installed in the car? Enabling me to read/write via the diag port.
You can read/write via the diagnostic port using my free software.  As long as you aren't running a tuned file that has had reading disabled. |
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Tony@NefMoto
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« Reply #22 on: August 16, 2010, 01:26:03 PM »
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Digging around in my garage I found a NIB stock hitachi MAF, so I will be swapping that in, along with my stock injectors, and then hopefully picking up a new wideband setup this week, so I can get some good baseline logs so that I can properly scale the big maf and then get the big injectors setup. This way I am not tuning them in relation to each other, so my load should be pretty accurate.
Check out my post here: http://nefariousmotorsports.com/forum/index.php?topic=170.0I posted stock mbox files that have been tuned for an 85mm MAF and 60lb Siemens injectors. Hopefully this helps a bit. |
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NicolasThe3rd
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« Reply #23 on: August 16, 2010, 03:01:50 PM »
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You can read/write via the diagnostic port using my free software. As long as you aren't running a tuned file that has had reading disabled. Tony, Unfortunatly that is the case. |
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Tony@NefMoto
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« Reply #24 on: August 16, 2010, 03:13:38 PM »
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You can read/write via the diagnostic port using my free software. As long as you aren't running a tuned file that has had reading disabled. Tony, Unfortunatly that is the case. In that case, you should just need to use boot mode once to read the ECU. After that you will only ever have to write to the ECU, and that won't require boot mode to do through the diagnostics port. |
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NicolasThe3rd
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« Reply #25 on: August 16, 2010, 03:56:37 PM »
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In that case, you should just need to use boot mode once to read the ECU. After that you will only ever have to write to the ECU, and that won't require boot mode to do through the diagnostics port.
So logically, If I were to find a stock ECU file (with GIAC tune), I could modify it according to my mods and then flash it? Never having to read what I actually have on? |
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Tony@NefMoto
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« Reply #26 on: August 16, 2010, 03:57:43 PM »
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There is no reason to read the ECU unless you need to have a copy of what is on there.
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NicolasThe3rd
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« Reply #27 on: August 16, 2010, 05:47:01 PM »
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Unable to read and able to write... I would've never thought.
Now I need to test this. I will have to wait for someone to post a worthy tuned file.
Thank you very much for your insight.
Nik
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Jason
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« Reply #28 on: August 16, 2010, 08:47:27 PM »
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Digging around in my garage I found a NIB stock hitachi MAF, so I will be swapping that in, along with my stock injectors, and then hopefully picking up a new wideband setup this week, so I can get some good baseline logs so that I can properly scale the big maf and then get the big injectors setup. This way I am not tuning them in relation to each other, so my load should be pretty accurate.
Check out my post here: http://nefariousmotorsports.com/forum/index.php?topic=170.0I posted stock mbox files that have been tuned for an 85mm MAF and 60lb Siemens injectors. Hopefully this helps a bit. Very cool. Thanks for this. I swapped in the stock injectors and stock maf this weekend, then had a massive fuel leak, so I drank beer. Nik, I just got home from work, but I'll see if I can get some pics in a bit. |
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Jason
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« Reply #29 on: August 17, 2010, 08:28:40 AM »
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Sorry for the poor quality... cell phone camera since the big camera is packed... but this should show everything you need to see.  Basically I have a harness that plugs into that pigtail, and has a switch on the other side. When I close the circuit, I key on, wait 3 seconds, then open the circuit. BAM! boot mode! I don't think I'd recommend doing this on a permanent install because it obviously could introduce interference and cause issues. |
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