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      09-25-2012, 11:39 PM   #36
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Beg to differ with you Bob:

The DISA valve + proper programming appear to be the key.

Chipping the N52 in Europe is common. It looks like all N52s built for outside the North Amercian market utilize the 3 stage intake. The exception of course, in the US are Si designated models, E90 330i, and SULEV equipped cars.

Last edited by smellthebeans; 09-27-2012 at 12:50 AM.
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