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      01-29-2012, 04:16 PM   #13
DanMZe90
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Drives: BMW E90 330D SE
Join Date: Jan 2012
Location: Devon

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Thanks for the replies.

Haven't had it looked at yet just a lengthy discussion with my indie about what it might be! Upshot is that I need to bring it in to be looked at to be sure. I'll ask about the boost pipe, thanks for the link to the thread Danny.

One thing I wanted to ask is, at what point does the turbo officially spool up? The reason I ask is that when I start the car from cold, I can get it to make this noise revving from only 500-1000, a point that I was thinking the impeller might not even be spinning. Thought I saw 1500 bandied around but not sure where I saw that....

Thanks

Dan
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