If you want to race Takumi on Akina Dhaka during a thunderstorm with rain physics turned on (a hidden feature in IDAS8), this is the only way.
Install required patches (like Update B and D) by overwriting files in the main game directory. TeknoParrot to point to the dumped
If you still want to pursue emulation via TeknoParrot, search for recent setup guides on YouTube or arcade emulation forums – but be prepared to find the game files on your own.