Nissan 20×2 Boards

Versions

This is the documentation for the Nissan Boards.  At this point, there are only one version of the boards, 1.1nm  As future revisions to the board are produced, this page will be updated.

Applications

These boards are designed for S13 and B13 applications.  They will NOT work with S14a ECUs that have a 20×2 pin header.  They will not work with late S14/N14/etc. ECUs that have a 40×1 header. Known good applications:

S13 Silvia RWD “Red top” SR20DET (i.e. 62, E5, etc.) 240 swaps, etc.

S13 Silvia RWD “Black top” SR20DET NON VVTI (VVTI motors not supported) 240SX, etc.

S13 240SX KA24DE twin cam engine US Engine

B13 Sentra FWD SR20DE Sentra, etc.

U13 Bluebird SR20DET

About the Board Hardware

The 20×2 Nissan ROM board has two 28 pin sockets for an EPROM such as a 27SF512 or 27C256.  These are not “even-odd” style boards – chips installed in this board should always have identical programs unless you REALLY know what you are doing.  You will need to buy a ROM burner separately if you do not already have one – this board cannot program chips.

You can use two Ostriches with this board.  Insert each Ostrich like it was an EPROM.  Make sure JROM is not installed (see below for more) or you may have issues with addressing and Ostriches.  You will need a 5.x version of TunerPro RT to have native dual Ostrich support.  You can accomplish the same thing using TunerPro 4.x by also using EmUtility (available from tunerpro.net in the utilities section) to run one Ostrich in emulation mode while TunerPro natively runs the other Ostrich.

Switching and JROM

As previously mentioned, the 20×2 board allows the use of two programs with near instantaneous realtime switching.  The JROM is used to change between two programs when using 512k chips (i.e. 27SF512 or 27C512).  By default, the adapter uses a 32k program from 08000h to 0FFFFh.  When JROM is present, the adapter uses the 32k program from 00000h to 07FFFh.  You can mount an external switch for the jumper if you like.  This link has more information about programming multiple programs and offsets.

Software support

This board has no copy protection that would prevent you using it with a particular software package.  The technical answer to “software support” is to say that it will work with any software capable or providing a Nissan binary ROM file.  Software I have tested these boards with:

  • Tuner Pro RT ( www.tunerpro.net )
  • 925style.com ROM Editor ( ask google “925style ROM editor” – original site is down)
  • Nistune

Just to reiterate – any software that can output a binary file will probably work fine with these boards.

Installation

Installation of the Nissan 20×2 boards can be quite tricky.  A proper de-soldering iron is required for good results.

  1. Remove both the top and bottom case from the ECU
  2. De-solder all 40 pins of the 20×2 connector.  remember, a clean de-soldering job is critical to this working correctly.  Be careful not to overheat and burn any traces as this can be easy to do.  When you are done, it should look something like this:
  3. Place the installed pin header in the 20×2 header so that the “notch” in the header faces towards the blue ECU connector:
  4. Solder the 20×2 header in place carefully.  Again, remember clean, accurate soldering is critical for this product to work correctly:
  5. Find the jumper marked “CJ1″  – you will need to remove it and move it to position “CJ2″  as this enables the use of the ROM board.  (Putting the jumper back to CJ1 will enable the use of the stock program.)  Be careful when doing this.  The use of two soldering irons, a soldering iron and de-soldering iron or best yet – a set of SMD tweezers will make things much easier.  If you damage the jumper removing it, do not worry – you can use a small piece of wire or a paperclip instead.  (Trim any excess wire / paperclip if you use this method)
  6. Finally, slide the 20×2 board onto the installed header:

Binary Editor and EEC Analyzer Registration

Binary Editor

In order to issue you a license for Binary Editor, you must first download and install the software. ( http://www.eecanalyzer.net )  Once you have downloaded and installed the software, go to the “Register” menu at the top of the screen and select “Register Binary Editor”

Next, you will be presented with a screen where you need to provide some information.  First, check the boxes to indicate which hardware you will be using.  Under “Tuners,” check “Moates” for the QuarterHorse.  If you have an Innovate or PLX wideband, make sure you check the appropriate box under “Loggers.”  You will also need to do this for the DataQ standalone datalogger, if you own one.  Finally, put your name in the “Licensed To:” box.  Finally, copy and paste the Machine Code displayed and email it to support@moates.net so we can issue you your license.

Note: you will see the machine code  change as you check and uncheck boxes along with changing the name in the “Licensed To:” box.  You must have the same boxes checked and your name typed identically as when you requested your license before you type in the registration key or your “Machine Code” will be different and the registration process will fail!

After you have received an email with your registration key, you will need to open the software registration box again, make sure the same boxes are checked, re-input your name in the “Licensed To:” box so everything matches.  Enter the registration key in the boxes below and then click “Register” – and you’re done!

EEC Analyzer

Download and install the software from http://www.eecanalyzer.net

Go to the “About” tab and click “Register”

Copy and paste the “Machine Code” into an email to support@moates.net

When you receive your registration code, navigate back to this screen and enter it in the bottom box then click “Ok.”  Your software will now be registered.

GM 94-95: Reflash or not?

94 and 95 were also kind of odd years for GM computers as they transitioned toward OBD2.

There are several groups of ECMs.

94-95 LT1,LT4,LTx: These can be tuned via TunerCATS ( link ) with the $EE definition and an ALDU1+CABL1 (94 – square ALDL style connector) or ALDU1+CABL2 (95 “D” shape OBD2 connector).  APU1 also works for reflash on these vehicles.  No chip adapter needed.

94-95 TBI: Unlike all other TBI ECMs (which use a G2 chip adapter) these ECMs are memcal like their TPI cousins and work with the G1 memcal adapter.  Take the cover off the ECM and if you see a memcal, you probably have one of these.  The 16168625 is an example.

94-95 W-body LQ1: uses the regular MEMCAL found in 1227165/7727/7730 ECMs, you can use the G1 adapter in these units also.

94-95 3800: Primarily use the 16183247 and subsequently a different style memcal is used than earlier ECMs.   The 94-95 3800 powered regals use a similar ECM that is weatherproofed, the 16183428, but that ECM is specific to the 94-95 3800 Regals only. This family of PCMs have the little blue ‘box’ memcal that has the integrated knock sensing board.   A G4 chip adapter is required for these, it’s shorter than the G1.

93-95 3100 vehicles (except for the A-bodies, which use a non-weatherproof version of the 94-95 LQ1 PCM) are all flash units. Unfortunately we don’t currently have a solution for these.

(Thanks to Robert Saar for his help!)