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      05-21-2009, 10:01 PM   #1
vulcan747
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Does the 7's new 4.4 TT engine have the pulse-tuned exhaust manifold?

This may be only an M option we will be seeing on the X6-M.
Wonder if one could switch out the high performance manifold but then again
the car probably has to have a higher TT PSI in concert with the manifold to extract that extra horsepower.
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      05-21-2009, 10:40 PM   #2
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Quote:
Originally Posted by vulcan747 View Post
This may be only an M option we will be seeing on the X6-M.
Wonder if one could switch out the high performance manifold but then again
the car probably has to have a higher TT PSI in concert with the manifold to extract that extra horsepower.
I don't think the 'regular' 4.4l TTV8 in the 750 has that option. If you read through the X5M and X6M press release especially the section that goes into more detail about the modifications they have done to the TTV8, you will notice some of the changes and what they incorporated or enhanced to get the extra performance out of it. I'm sure that that engine will be the next M5 power plant (only makes sense seeing as they have done all the ground work on it already).
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