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tarmac-
Joined: 29 May 2006
Posts: 106
Location: New Zealand.
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 Posted: Thu May 03, 2007 4:39 am Post subject: RB20DE ecu 27c128 and RB20DET 27c256? - PLEASE HELP!!! !!@! |
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ive been using a rb20det ecu witha 27c256 chip in it as standard, so replaced with a retuned 27c256 and went fine.
so i managed to get another rb20de ecu which ive used succesfully before in a rb20det with a 20det map retuned,(different rb20de ecu) however this ecu has a 27x128 chip as standard, and if i burn on a 32kb map (256) which is the standard 20det size, it gives a check engine flash.
So how can i use a rb20de ecu with a rb20det or 25det fuel map wen its only a 27x128 chip as standard.
sorry for the mass confusion
Cheers. |
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darkhalf
Joined: 08 Dec 2003
Posts: 365
Location: Adelaide, Australia
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| Posted: Fri May 04, 2007 1:31 am Post subject: |
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copy the 16K image from the 27C128 into the top half (4000-7fff) of the 27C256
you will have to copy the fuel maps manually based from their addresses (in the romeditor address file) |
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tarmac-
Joined: 29 May 2006
Posts: 106
Location: New Zealand.
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| Posted: Fri May 04, 2007 8:22 am Post subject: |
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| darkhalf wrote: |
you will have to copy the fuel maps manually based from their addresses (in the romeditor address file) |
could you elaborate on that abit please. thanks  |
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ByReaL
Joined: 08 Jun 2005
Posts: 50
Location: Romania - Bucharest
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| Posted: Fri May 04, 2007 8:34 am Post subject: |
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what i did to use 16K image from 27c128 into a 28c256 was simply to concatenate 16K image and again same 16K image and i had 32K = 16K + 16K writed that into the 28C256 eeprom inserted into the CA18DET ecu and job done
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* If you haven’t broken it yet, then you are not going fast enough.
* If it's got tits or tires, it's gonna give ya problems
* Got the 1.8L Love. |
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tarmac-
Joined: 29 May 2006
Posts: 106
Location: New Zealand.
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| Posted: Fri May 04, 2007 12:20 pm Post subject: |
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yeh its the other way round.
256k chip into a 128k. |
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tarmac-
Joined: 29 May 2006
Posts: 106
Location: New Zealand.
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| Posted: Mon May 07, 2007 10:49 am Post subject: |
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bump.. :s
so what im asking, is to use a rb20det fuel map (32kb) on a rb20de ecu(16kb) what do i do.
can i just copy the K value and fuel map over to the 20de bin?> |
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darkhalf
Joined: 08 Dec 2003
Posts: 365
Location: Adelaide, Australia
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| Posted: Mon May 07, 2007 2:54 pm Post subject: |
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yes you do. you need to know where they are. then just cut and paste the map from one ROM image to the other
can use a hex editor to do that |
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tarmac-
Joined: 29 May 2006
Posts: 106
Location: New Zealand.
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| Posted: Mon May 07, 2007 11:52 pm Post subject: |
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ok gotcha thanks heaps!
dont suppose anyone has a rb20de bin and location of the fuel n igniton , or even a address file - big ask, i know
thanks for the help |
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FAST-TRACK
Joined: 21 Apr 2004
Posts: 165
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| Posted: Sat Dec 01, 2007 2:02 am Post subject: |
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Data rom 27c128 and 27c256 is not the same. You need base rom from 27c128 and copy to 4000-7FFF.
What your ecu part number?
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tarmac-
Joined: 29 May 2006
Posts: 106
Location: New Zealand.
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| Posted: Tue Dec 04, 2007 9:11 pm Post subject: |
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| mec-r101.r103 |
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