Not to insult you but might it be a wheel bearing rather than exhaust related?
Ive got the Miltek twin exauhst, stainless cat back system. When you put your foot down you can hear this whistling, sounds sort of like a turbo spooling .. Is this normal? Ive been told its normal for twin exauhsts to do it .. Dose this happen to anyone else? Lol.
1v just bought a 182 with packs, nearly 2 week ago now,..and i put a milltek decat on HER , MI MISSES,.....coz the standard that was on HER, was ready for going 2 holes in the back boxes nearly, anyway i noticed 2night , with head out of window,i can hear a slight whistle noise, on / off,
so i'm also abit baffled :clown:,........ideas any 1 plz,
cheers marcus.
I'm not sure that I understand quite what you are saying sir