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Old 02-27-2012, 02:43 PM   #6
izaks
 
Drives: Chev Lumina 416
Join Date: Apr 2010
Location: South Africa
Posts: 22
Quote:
Originally Posted by Jessika View Post
I don't know the answers, but a PD blower will lose approx 1lb of boost for every 3,000 ft of altitude.
Correct.

If your "key on" map is 100kpa at sea level, and 85kpa at 6000ft (like we are) than you have "lost" .15kpa (2.175lb) in boost.
We have to run our Mp1900's (on the L76/L98) with the 2.8" pulley to compensate for the loss of boost due to altitude
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