http://www.mri-racing.com/MRI-ARCA-Downloads

Note: the webpage is not firefox friendly or atleast on my computer it isn't.

I ran into this page a while back but haven't had a chance to mess around with the downloads until recently. Some are pretty cool.

The 2 settings for the G25 work really well and I have even used them in rFactor and they seem to work pretty good too.

The spotter download works good. I have not used it in a race yet but during practice yesterday he was calling out lap times and car low or car high.

The Graphic Update I have not really seen any difference so far. Only thing is that I believe it also puts the 2 files to remove the Tach from the screen in your ARCA folder. You can just delete those 2 files if you want the tach back.

That is the only ones I have downloaded. Going to look into the engine sounds and maybe the tach one.