Dear collective wisdom group,<p>I have a '98 A4 1.8T - love the car to death 'cause of the way it handles in the snow<br>and about thousand other reasons. <p>One thing that has happened recently is that the turbo sings to me at 2400 to 2600 rpm<br>and again around 3200 to 3400 rpm. It does this when the engine is cold and when it<br>warms up it seems to get better. Though in temperatures in the teens then it seems to<br>never warm up enough. Does anyone else have this anomolous singing happening on their<br>1.8Ts <p>Thanks<p>Stephan<p>PS email me directly if possible