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Originally Posted by 100_Percent_Juice
Speaking of Fuel rails. When depending on mods should they be installed on a wrx?
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When/if you hit 450awhp, then you might need fuel rails. The factory design is pretty damn good on our cars. Don't buy the stuff you might hear/read about certain cylinders going lean due to the fuel rails. There are plenty of people maxing out 800+cc fuel injectors on the stock rails.