[urq] Wastegate "Chirp" on Rally, SCCA and IMSA Race Cars

[R Wong]

Greetings everyone in quattro land, I am reaching out to the board for some information on what wastegate Audi Sport used in order to get that cool chirping sound from their cars in the late 80s and early 90s, meaning the rally Sport quattro, SCCA 200 quattro, and IMSA 90 quattro.  I did spend a bit of time searching but was not successful so this is the reason for reaching out to the board for information.  One last thing, does anyone have a chipped ECU they want to sell to me for my 83 ur q?  If so, e-mail!  Thank you very much everyone.  


Kind Regards, 


R Wong