Interesting info...mine shows empty when the car is off but when it is in accessory mode or car is on, the fill line shows to be overfilled and its to the top of the cap. Why is that?
Do you have longtubes on your car? I was leaning towards putting the Magnaflow Tru-X on my 18 Whipple car to try and get rid of the raspy sound but your recent post has me a little skeptical. Definitely don't want to add a restriction.