When the turbos slowly or quickly spool up, the car makes a consistent tapping sound--its not detonating, its not missing, and it (the car) actually is just as quick as when it doesn't do it at WOT. Sometimes the car does this and other times it doesn't...
And, it does it when the car is cold. What could this be? I wouldn't guess it'd be a loose shaft or anything along that nature...
Could this even be a popping relay?
Any help is appreciated!