Thread: Spark Plug
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#1: 03-31-2006, 04:45 PM
Spark Plug
Title: Senior Contributor
Location: Toronto, ON, Canada
Car: 2006 Legacy 2.5i
Posts: 902
iTrader: (1)
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I own a 2006 2.5i, and i was thinking of swaping into some better performance spark plug. but i have a few question unanswered, hopefully someone can help me.

1. What spark plug should i change into for a 2.5i model? (Brand and model?) And how much HP increase would i get?
2. Does changing to new spark plug increase fuel consumption?

(I dont see anyone that brought up this topic in the search. but if someone can gimme some old post that already mention similar info that would be helpful as well. THX!)
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