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Old 01-07-2013, 01:28 PM   #121 (permalink)
orbywan
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Join Date: Jul 2010
Location: Tucson, AZ
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Quote:
Originally Posted by kafer65 View Post
One thing, turbo is load sensing irrespective of rpm. If you make more aero improvement s or slow down to reduce aero load the boost will subside even if your at max rpm. Changing to as smaller gear may put you where you have an increased load on the engine and increased boost even when your rpm is reduced. Great job, buy the way. I have an old dodgeslant6 pickup with 3.55 gear and I only get 13mpg empty. I'm so ready to put an airdam and aero bed cover together now.
Yes I have that debate going on in my mind. I started to do that with my Saturn and after finding some torq/horsepower/rpm charts on it I decided I might be going backwards with lower gearing. I shaved the side mirrors, did a total block off of the front grille and covered the head light nacelles with plexiglass and I'm averaging a bit over 50 mpg straight and level with no A/C. I'm happy with that a far as the gearing. Next up is a complete set of wheel fairings and maybe belly pans.

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