I did quite a bit of research to find the signature sound and maintain it at higher rpm adjusting the various sliders, more specifically the collector and tail mix.
In a perfect world there would be no clipping but some clipping do add to the realism in my opinion but I kept it within a reasonable range.
A lot of time was spent adjusting all the details and correlation between all the elements such as the intake in relation to the turbo spooling, it has a flutter type of blow off that I made with Audacity, it was inspired by another sound that was around a couple of years ago, some people may remember it as ''shorthigh.wav''. It's not the same sound, I tried to make it as natural as possible, focusing on the airflow/pipe pressure sound tones. (The blow off can be loud for some, adjusting the dump valve muffler still give a nice result, if you like a subtle blow off)
I think without pretention that this is probably the best sr20 sound you will find. Feedbacks are appreciated
P.S for those using tweaks with the XRG, turbo sounds are preloaded.