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Hacking up Honda's ECU
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 Post subject: ITR Program?
PostPosted: Wed Oct 12, 2005 3:42 pm 
I looked around and couldnt seem to find a stock ITR program. Could someone maybe link me to one, thanks ahead of time.


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 Post subject:
PostPosted: Wed Oct 12, 2005 4:36 pm 
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Joined: Fri Aug 20, 2004 6:33 pm
Posts: 2273
Location: chicago burbs
P73 only came in OBD2 versions.

http://www.pgmfi.org/twiki/bin/view/Lib ... itionCodes
search for the P73, there are a few that you can pull the maps from to make a tuneable program.

I personally used the Int497tr.bin and imported the vales into a P30 base and it worked well.


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 Post subject: Hey..
PostPosted: Wed Oct 12, 2005 8:06 pm 
Hey, I want the P73 program on a P72 or P30 ECU for my friends ITR swapped EG. I did what you said and put the Int497tr.bin and imported the values onto a P72 but I tried to change rev limiter to 8900, and when I save it and go back in it didnt save....weird. Im using Crome. Also, I tried to import the Int497tr.bin onto the JDM base P30, but it says that tables are wrong size or something.


Last edited by HondaTom on Wed Oct 12, 2005 8:13 pm, edited 1 time in total.

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 Post subject: Hey..
PostPosted: Wed Oct 12, 2005 8:12 pm 
Hey, I have another question. What ECU should I use to put this program on? Can I put it on just like any OBD1 Honda ECU, like a D15 ECU?


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 Post subject:
PostPosted: Thu Oct 13, 2005 5:28 pm 
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Joined: Fri Aug 20, 2004 6:33 pm
Posts: 2273
Location: chicago burbs
since there is no P73 program for OBD1 ECUs you have to basically make your own.
you also have to do like I suggested here --> viewtopic.php?t=7545&highlight=
the missing values need to be added to fill in the map.

you can run the map on anything that has VTEC control. So P72, P30 or P28 is fine.
The D15 ECUs (P05/P06) are the same boards as the P28 so you can convert them for far less than the cost of a P28. Check the WIKI for that info.


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 Post subject: Hey..
PostPosted: Thu Oct 13, 2005 5:46 pm 
Hey, I still dont understand why it wont save my exact rev limiter setting. I put in there like 8700, and when I save it, the setting will change to 8720..


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 Post subject:
PostPosted: Thu Oct 13, 2005 6:20 pm 
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Joined: Sat Oct 16, 2004 12:33 am
Posts: 221
Location: Salisbury, NC
Because the math the ecu uses doesn't allow you to always get the exact value you want. Same goes for the vtec point, or any of the cells in the fuel and ignition maps. I promise you won't notice 20rpm. :P


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 Post subject:
PostPosted: Thu Oct 13, 2005 9:13 pm 
drdisco69 wrote:
Because the math the ecu uses doesn't allow you to always get the exact value you want. Same goes for the vtec point, or any of the cells in the fuel and ignition maps. I promise you won't notice 20rpm. :P


Oh I know that I wont. I was just curious.


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