Whine/siren noise from Turbo 2.4 10v
Ever since owning my car, it's never felt as powerful as it should be. My brother has the 140 bhp version, and mine is the 150bhp 2003 model and his always seems faster than mine in any gear.
His turbo doesn't make much of a noise whereas mine makes a siren/whine noise, quite loud from outside the car, and can still be heard inside with the windows up!
I have tried to check for boost pipe splits etc with no luck. The car is on 190k, with no history of a turbo change (so could be original). If you 100% throttle in 1st gear(even in the wet with ASR off) it wont spin the wheels, whereas my brothers seems to spin up in 1st and a little in 2nd if wet.
Is my turbo just tired and noisey?
Also my brothers Alfa seems to be much more sensitive on the throttle, slight tap and your off, and mine seems to be slightly delayed...
I don't want to replace my turbo if there are other factors involved? Any suggestions?