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      09-12-2010, 04:13 PM   #3
Road Cone1
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Drives: 135i & 325i
Join Date: Sep 2008
Location: Oakville, Ontario

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It's all a matter of emissions and fuel economy.
A turbo engine can be designed to provide cleaner exhaust and better fuel economy for a given size, which equates to weight, and power output.
Also the engines are produced with a budget in mind.

P-cars are producing better HP with small 6 engines, instead of the usual V8's, but they are pricey to replace.
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2012 White 328i Sportline
2009 135i Silver w/Black (Sold)
2006 325i, AW & BLack, ZSP (Sold)
Lots of Miatas
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