it doesnt sound any different like in terms of over drive or such, but the fan is really really loud when you accelerate. In other turbos i have driven (not nessesarily a volvo) you can really hear the turbo when accelrating quickly. I was just wondering if i should be hearing it or not.

anyone know why i cant hear the turbo on my 1989 turbo 740?

I dont know what the problem is!!!!

I have a 1989 740 turbo intercooler and i cant hear the turbo. What is the problem? The fan is really loud so either it is drowning it out or it has been muffled somehow. So i was just wondering how i could hear it again.