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      04-13-2010, 03:21 PM   #36
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Drives: 08 IB E92 M3
Join Date: Mar 2008
Location: Maryland

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Originally Posted by Bob MG View Post
Gents I will be finished with my VT2 kit on Friday.
Instead of the 100mm pulley which boosts 5,5psi,
Roman supplied a 95mm pulley good for 6,5-7psi at sea level.

Based on the calculated loss of 0,17 bar or 2,46psi at 5000 ft, I would be safe to assume that my boost pressure will be between 4,0-4,5psi.

If it's closer to 4psi after dyno, we may contemplate a 92mm Which is normally a 7,5psi pulley at sea level.
92mm is the smallest pulley you can use with the VT blowers without changing belts and software.

Practical will be better than this speculation
That's very good. But, the real question is how does Suzy feel about this?


I've been assimilated. 6MT/ZPP/18"/PS extended.
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