Ok, if you guys are driving around with a motor that has 250,000 miles on it and the turbo has never been rebuilt.... You're missing out.... So much end play develops, the fins on the turbine and compressor wear down or chip, bearings get harder to turn on. And worst of all.... THEY START LEAKING AND PUMPING OIL INTO TO THE INTAKE!!!!! So if youre on a budget, you can just purchase a bearing and seal kit for pretty cheap! And its fairly easy if you have patience and totally worth it. I went the extra mile since i was everywhere else.. and bought a new turbine and shaft and compressor wheel also. I actually HAD to do this because i made a big booboo.... I tried to hit the turbine out of the housing while the TURBINE housing was still on.

( https://www.flickr.com/photos/113280060@N03/13308944023/ )

(The big piece that bolts to the exhaust manifold). The turbine housing requires an incredible amount of heat to break free from the center section, but with heat, it is easy.
( https://www.flickr.com/photos/113280060@N03/13308940703/lightbox/ )

once the housings are apart its smooth sailing. Make sure you verify whether you have a Garrett or a KKK turbo.
Now, The Turbo spools up at exactly 1800 rpm's and makes you feel like youre taking off (with the combined sound of the turbo that sounds like a jet). I have a K&N style filter on now (Dont worry! Ive decided to go back to stock!!) but it is so much louder. You cant hear anything but the turbo. It made a large power improvement. If you make sure its working correctly in tandem with the alda, i guarantee it will make an improvement in your car.

https://www.flickr.com/photos/113280060@N03/with/13308911603/
(look at the turbo photos)