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Old 11-09-2011, 01:13 PM   #7 (permalink)
beatr911
Master EcoModder
 
Join Date: Feb 2008
Location: West Coast, USA
Posts: 513

B2300 - '96 Mazda B2300 SE

Focus - '05 Ford Focus ST
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Restricting the intake or exhaust will add work for the engine to overcome to produce power. Not likely to reduce fuel consumption. For your stated purpose go with a 125 or 250 depending on how fast people accelerate from a stop. See what is popular in your city and ask the riders what they think about thier choice.
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