View Single Post
Old 01-25-2005, 04:36 AM   #16
insite
Registered User
 
Join Date: Sep 2004
Location: Atlanta
Posts: 1,820
Facts: To get 20HP out of the boxster (2.7L), you need to do one of the following:

1. Decrease manifold air temp by 4% absolute (about 50F)

2. Increase manifold air pressure by 9% absolute (about 1.1 psi)

3. Increase overall thermal efficiency of engine by 10% abs (3% of fuel heat val)

4. Increase lambda number by .08 (to 12:1 stoicheometric rato [13.1 is stock])

which one of these does a muffler do? or an intake? discuss.
__________________
insite
'99 Boxster
3.4L Conversion

http://i156.photobucket.com/albums/t...1/KMTGPR-1.jpg
insite is offline   Reply With Quote