Good question. You can't make 90 degree bends in profile for some reason. If you leave the pipe run intact and try to manipulate it, the system breaks and all the parts jumble up. Maybe Autodesk will fix this in the future.
My 6-6 has the Res Delete, borla, takeda SRI, and K-tune for 91 octane. Daily driver runs great but it does drone between 3-4 thousand rpm. Not terrible but if you want to smooth out the drone, put it in eco mode, it also makes it burble a little more on deceleration.
