[QUOTE]Originally posted by Slows2k

 

As you have stated, the S specs are:
47-54psi, with the regulator's vacuum hose attached.
I'll add this as well:
38-46psi with the same hose disconnected.

As far as references go, How about an ASE master tech that has worked on Honda's and Acura's for the past 5 years. Aus allready knew that.

Every OBDII and OBDI Honda I have every checked the fuel pressure on, has been in the same range. They even use the same pressure gauge, which has a range of 0-60psi.

 

I've asked questions about OBD before but never really got an answer. Is ODB I and II just a set of sensors and a control unit that can be read and reset? Does it have anything to do with the actual running of the car?

I ask this because our engines and yours are essentially the same, yet yours are OBDII and ours aren't. Also, I wonder what is required to retrofit OBDII on an Aus S2000?

 

It's not as simple as a seperate control unit and sensors.

OBD regulations cover numerous functions of the PCM.

Standardized DTC's, Diagnostic connector, connector location, Sensor Acronyms. The PCM also has mandated tests of sensors and systems.
This is a much simplified desciption of OBDII. The OBDII training material from Honda fills a 3" thick 3 ring binder.

As far as retro fitting an Austrailian car, you would have to see if the it uses the same evaporative emmissions system, a secondary 02 sensor in the convertor, an Air pump, as well as the same connectors to the PCM.

I would say it most likely not compatible, and pretty costly to make it so.

 

We have very similar emissions standards here and hence most of the actual hardware you have such as the air pump.

I expect that most of the systems are the same, but Honda just left out anything not required in Aus.

I'll go through the CD manual and note the difference in the areas you mentioned and then go on from there.

 

I hate to ask Aus, But why are you wanting to convert to a OBDII PCM? Or does the AEM EMS you have talked about not plug in directly to Austrailian cars?

 

I don't actually intend to do it. I just want to develop an understanding of the system and the differences.

I'm pretty sure the AEM just plugs straight in. As it's not OBDII compliant I guess it doesn't have any extra connectors for ODBII sensors anyway?

 

There are no "OBDII only" connectors, the systems are intergrated into the engine and body harnesses.

I don't believe the AEM even looks at the inputs from no supported systems.

Do the Aus cars use a 3pin diagnostic connector for a PGM-FI tester to plug into? Or have a seperate SCS 2 pin connecor that can be shorted to pull flash code DTC's?

 

The EMS doesn't use any of the ODB II sensors (can be programmed to...but why? ) as a requirement. The systems are created only for environmental purposes.

I would like to know if you have the OBD scan port on your passenger side.

 

I realise there are no 'ODB connectors', but assume that some of the pins on the wiring harness must connect to ODB II specific sensors or black boxes. These pins must be just ignored on the Aus loom.

Yes, our cars have the PGM-FI connector and the two pin diagnostic port. What is PGM-FI and how does it differ from OBD II?