So then guys, help is yet again required.
car is driving fine, however at around 85mph ish (not on a public road obviously) when the car is cruising there is a strange 'whirring' noise.
if i slow down, or accelerate the noise seems to go, beginning to worry me though as its definitely no a rattle or trim noise.
could it be coming from the gear box?
my technical knowledge is less than zero, so if i have not given enough detail please let me know.
any help much appreciated
Pete
P.s. car is as standard, apart from Cobra exhaust - this was professionally fitted, and noise was there before it was added.