These question are in conjunction and pertaining to the s200 system(please forgive my noob status )

Through brief searches in exploration of further knowledge about the unit, I have come to learn that this tool embodies additional elements which are added to the standard ecm to allow the use a Hondata program.

First, I am a little unclear to how the Hondata system exactly works,(somewhere I read it changes from obdII to obdI,is this true or am I way off?)

Second, for example, I go and purchase the interface box(s200) and besides for the wiring adapter, which other accessories would I need to complete the set-up(obviously excluding the tuner)?.

Thanks in advance

 

to make s200 work, you need obd1 ecu and obd2-obd1 conversion harness and the hondata box. you may also need obd1 clips if you decide to swap injectors, and resistor box if you don't get saturated (more details on injectors inside FAQ).

now, obd1 ecu needs to chipped for hondata, if not you'll need to pay an aditional 50 bucks or so to get it chipped. sometimes f.p.r/fuel gauge can help while tuning w/ larger injectors..

but at the minimum with stock injectors all you really need is obd1 ecu, conversoin harness and s200 box.

 

For some reason, only OBD-1 ECU's can be socketed and re-chipped with different PROM's, so you have to convert the engine management system to OBD-1.

Socketing the ECU involves soldering in a few components, the highlight of which, is the 28-pin socket that allows you to swap 28-pin PROM chips in and out with different programs on them or to connect a romulator, so you can make real-time changes to the program.

Hondata allows the fuel and ignition timing basemaps to be changed independently of each other, as well as allowing for changes in target idle speed, injector size correction, closed-loop/open-loop setting, VTEC x-over rpm/minimum load, and coolant temp enrichment using the ROMeditor software. That's the major stuff, but there's a lot more stuff like full-throttle launch/shifting, nitrous control, wideband integration, sensor output logging (with datalogging option), etc. that are also useful, but not 100% necessary.

You write and save the programs to a .bin file and that file can be used to either real-time edit (using the ROMulator) or to burn a PROM chip (using the Pocket Programmer).

If you want to tune it yourself, you'll need:
1.) Hondata S200 or S200b (if you're boosted)
2.) ROMeditor option
3.) Datalogging option
4.) laptop computer
5.) ROMulator
6.) Pocket Programmer
7.) wideband UEGO sensor
8.) OBD-2 to OBD-1 conversion harness
9.) OBD-1 ECU - which needs to be socketed (hondata performs that service for $65)
10.) low-profile ZIF socket (see moates.net)
11.) probably another 29C256 chip just in case you break or damage one (see moates.net as well)

If you're letting someone else tune it who already has all the tools, then you won't need #'s 2 to 7, but I still think it'd be nice to have 3, 4, and 7 for your own use.

 

Good info. Thanks for sharing.

Modern Intellect, who is the chic in your avatar?