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Hey Guys, Well my week before Xmas is shaping up to be worse and worse. Today its my car. It has started to make a very loud industrial sounding vacumm cleaner noise shall we say... lol. And it seems to be completely insync with when the turbo would spool. Initially I thought its a intake restriction (maybe a door/flap not opening any more) but now I am getting even more paranoid that its the turbo that has shat itself. So my car has always made a turbo spool up noise since I bought it 2+ years ago in Aug 2010. Initially I thought "oh no... I have a fried turbo". But later I found info online that this is the normal operating noise of the VQ25DET turbo setup. I hope to this day that is true. Either way the car has always behaved well in accelerating and never missed a beat and no smoke or anything. A1. I will attach before and after sound bites I have taken. Good thing I have the "before" on hand still. My car is completely stock with exception of a HDi front mount intercooler I installed my self. I checked today the intake fitting as best I could without taking the bumper and reobar off and all looks ok. Although I did notice there is a small coolant leak on the car LHS. So today was driving home with wife and kid. I had the aircon cranked up to max as it was 30*C outside at the time. I was on a uphill slope sitting at the traffic lights. They went green and I floored it to beat the other off the line with the car locked down into 1st gear in sequential mode. Acceleration was poor but jsut thought that's the usual for having aircon on. Then at the next set of light with only a slight uphill this time acceleration was poor once again which I thought was strange AND THEN... I hear this very loud unusual sound. Best way I can describe it is like a vacuum cleaner. Or a wurring sound but not really a siren sound. My immediate impression was that the lack of acceleration was due to a choking engine from restricted intake. If the car is rolling or not accelerating you dont hear the sound but apply a little to max gas pedal (another words make the turbo kick in) then the sound is very strong a loud to hear. I stopped at a servo to check ECU fault codes as I had a similar thing on a subaru legacy when if I accelerated in a too higher gear like 4th uphill, the ECU would sense the turbo boost not rising quick enough and go into safe/limp home mode. To fix that I would reset the ECU and all fixed. Anyway back to the stagea and the check engine light was giving me 4 groups of 10 flashes, another words 0000 - no fault. I reset the ECU anyway while in diagnostic check mode. All this did was now make the engine run rough as shit at idle now with a tapping noise going on in the intake manifold area but got better over time. I then decided after mucking around in the engine bay for a while to limp it home very carefully (hoping I have not made things worse - but now maybe good excuse to upgrade? - lol). The limp home helped idle as the ECU seems to have relearnt the air/fuel mixture I guess. So I am posting this for advice or help. Listen to the attached sound files of before and after and let me know what you thoughts are. Is my turbo sounding fried? Or is it something thats probably stuck shut on intake or needs reset? Love to hear any kind of feedback as tomorrow first thing now I need to get this car sorted before the Xmas period. Thanks in advance, Paul. Sound bite 1 - before: https://dl.dropbox.com/u/27909437/Stagea%20-%20before.wav Sound bite 2 - Sick Stagea: https://dl.dropbox.com/u/27909437/My%20Sick%20Stagea%20M35%20Turbo%202002.mp4 Note: The sound file labelled sick stagea I took on my Galaxy S3 which saves as a 3ga file which is meant to be a mp4a file according to vlc. I have renamed extension to mp4 so it can be recognised by media players. Let me know if its not working.