i just finished installing my helix up and downpipes not too long ago. and i noticed that i am not getting a CEL. im guessing im supposed to have one because it comes with the fix. ive read on the forum about others having getting the CEL and then having to end up fixing it. did i do something wrong? also after the install im getting a little mellow whistle when i accelerate. i cant tell if its a leak or just turbo spooling? its pretty quite but its hearable. because i heard you would be able to hear your turbo after installing the uppipe. anyone have any ideas? any ideas welcome. thanks.