Can't remember all that I did. But reworked the turbo's efficiency a bit and played with a few other things. Also renamed the main file so I could find it easier in the mods folder. Ran a best of 7.4xx.
Added a sport exhaust and race exhaust. Both have different loudness of afterfire and different abouts of flames. Thanks to Ai'Torror for explaining how to do this. Both share the same model which also share the same model from the stock exhaust. Hopefully I will fix this in the future when I learn modeling with Blender.