Can anybody re-create an OBD2 system for a Nissan RB26DETT engine?

I’m an entrepreneur who is looking for an electrical engineer that can make from scratch an OBDII electronics reader for a Japanese RB26DETT engine to pass California emissions. Please respond any potential people that can maybe accomplish this task! 


Thank you,


Adam

This is not an area I know too much about and hopefully one of our other experts will know more.  But I am curious as to why an off-the-shelf OBD2 reader would not work?  

Hi Adam-Almost all of the OBDII readers use an ELM327 chip, which decodes the OBDII data stream into a human-readable serial data stream.  The chip was developed by ELM Electronics.  It's really a Microchip PIC18F2480 with proprietary programming. When ELM developed the version 1.0 code for the chip, they inadvertently shipped some without enabling the copy protection feature, so a number of disreputable companies ripped off the design and began selling clone chips. ELM discovered their error and enabled copy protection on their more recent versions.  Version 3.0 supports many more vehicle types than the earlier 1.0 version did.In addition to being used in standalone code readers, the ELM327 is available in adapters that go between OBDII and USB, RS-232, or Bluetooth. I think if you start by researching this chip you'll be off to a good start.-Rick 

Let me also mention that the OBDII bus is in reality a CAN bus. If you really want to design a code reader from the ground up, you'll need a CAN bus data analyzer .  This will allow you to see the actual raw OBDII data stream.-Rick

Thanks for the reply guys. Your response Rick was thorough. 
Let me rephrase the question! I am considering importing the R34 1999-2001 Nissan Skylines once the 25 year law hits. This car was never made with an OBD2 system. In order to properly import it an OBD2 system needs to be installed on the car. So not looking for a reader. But someone who knows how to install the system in a car never made with it or for it. 
Thanks 

Adam,
I'm not sure about this but you may need to change or add an ECU that supports OBD2. This is a bit out of my area....

You might be better off trying to retrofit a compatible ECU that already has the OBD encoders. Trying to build one from scratch would be a big job, certainly out of my ballpark.

Hi Adam-Sorry I initially misunderstood the goal.  I found this discussion on Reddit, and if some of the people involved in the discussion are correct, this is a really, really big project.-Rick

Thank you all for your replies!