Bump, I think you ended up keeping them as Daytona 2 though. If I remember correctly I sold you a DSB2 sound board on eBay back in 2021 or 22.
As much as I love Sega Super GT and Daytona 2, It is definitely possible to run OutRun 2 and SP on Chihiro system in these but it will require some work, but certainly NOT impossible. I wanted to set this game up in my cab because I practiced and mastered the game at a Round 1 arcade, and it has Ferrari cars in it - just like in Sega Super GT.
You need the following to do so
1.
Force feedback - JVS MIDI servo board in place of old servo board (and the cable that connects to the Chihiro with your own extension cable). If your cab is a Lemans 24 or Scud Race, be sure to use a bubble mailer to lay the new servo board on it, so no components short out, because the old servo board sits on a metal frame. The connectors are a tight fit but the force feedback works excellently; just like a real OR2 cabinet. I feel the shakes of driving off course!
2.
Video output - video converter that downscales the VGA 31khz VGA to medium res or standard res. I currently am using a GBS-C which works but only downscales 240p so it's a bit of an eyesore up close. But it's useable while I wait for my Ultracade UVC video converter to arrive. I'm powering this directly from my Sun PSU with the power cable for the GD-ROM drive, which my Chihiro system has a CF Card kit.
3.
Controls - Adapter that connects buttons, analog, and grounds to JVS IO (a pre-crimped set of IDC or Dupont connectors will work). Lamps are optional so you really only need the last 3 ground pins (9 thru 11) from CN12 for your test/service, VR panel, and shifter. No need for any 5v pins from that connector. I used these:
https://www.amazon.com/dp/B0D798767N?ref=ppx_yo2ov_dt_b_fed_asin_title
4.
Audio - Connect 4 pins from either set of speakers to the two RCA jacks on the Chihiro filter board. From my experience, OR2 cabinets only used the front speakers so I recommend using them.
5.
JVS IO Power - I power the JVS IO board using the 10-pin DSB soundboard connector, for the sake of convenience, but I am not using 12v as I am told the IO board will work without it. I used the aforementioned Dupont kit in the controls section
6.
Board Power - If you already have a Sun PSU in your Model 3 cab, great. Just disconnect the Model 3 power connectors and plug on the JVS ones and adjust your voltages accordingly.
7.
Shifter - no issue for a Lemans 24; however, you'll need to swap the shifter out with a 2-way one, and possibly the covers because the 4-way shifter is held on with special type screws that are unobtanium, IIRC.
The Model 3 drive board shall
be disconnected completely, namely CN5, which shares two of the 3 pins for the 5k pot for steering. If you leave this connected the game will not play properly. I'm sure the same principle applies to people who are converting Ferrari F355 Challenge cabinets specifically to Outrun 2 SP, as it is not compatible with the old Ferrari or Model 3 drive board.
