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Old 01-05-2017, 03:01 PM   #8 (permalink)
Honda Head
Join Date: Feb 2014
Location: nj
Posts: 20

Rescue Toaster - '90 Honda Civic
90 day: 40.92 mpg (US)
Thanks: 2
Thanked 5 Times in 4 Posts
MOST turbocharged vehicles run slightly rich under boost, even if the ecu doesnt "see" it that way, its just a way to keep the combustion process happy with added air and temperature. and most factory cars, like my cruze 1.4, with tiny hairdryer sized turbos, are almost always under boost. my car is at 0 psi at 55 ish(which is still technically in boost) and it just goes up with more speed. not entirely an efficient design
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