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Old 01-03-2007, 05:25 AM   #36
bimmerZ5
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Join Date: Feb 2006
Location: San Diego, California
Posts: 97
My Ride: Z3 3.0i, E39 3.0i
Quote:
Originally Posted by rsalicrup View Post


Boost pressure is built in exhaust gases and engine load. Has NOTHING to do with final drive. If anything would be from lower final drive to get more load.

But Boosted car can benefit from a longer first gear to take advantage of the turbo quick spool up and not waste it on tire spin and rev limiter coming so fast.
however, you have to take into consideration this is not a traditional turbo setup. there's a small turbo that spools up boost quickly while another larger turbo kicks in at the higher end. a lot of the know-how with traditional turbo setups don't apply in a straight forward way here...
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