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stock injectors on a wrx (how many cc's)

Old 02-04-2003, 12:14 PM
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Question stock injectors on a wrx (how many cc's)

I'm doing some major work on my Wrex and need to know how many cc's my stock injectors are, i'm going to 550's but i dont know it thats enough should i go 780 or 850?
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Old 02-04-2003, 02:18 PM
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I'm looking on making anywhere from 350 to 450 to the wheels, i already dyno'd the car at 314.5 hp to the wheels i'm looking for more power, although my machanic told me that knowing the stock injector size can help on making much more accurate Hp.
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Old 02-05-2003, 09:44 AM
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So your 100% sure that the stock injectors are 420cc? Only b/c your the first to tell me any # on the cc size on the stock injectors. And thanks by the way
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Old 02-05-2003, 10:25 AM
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thanks alot man i really appreciate that
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Old 02-13-2003, 08:58 PM
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i already dyno'd the car at 314.5 hp to the wheels
that's very impressive on stock injectors! i haven't seen anyone pass ~270whp with stock.

why not go with the 850's?
-DF
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Old 10-06-2018, 12:55 PM
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Stock injectors

this ones from a long time ago but I figured Id jump in anyway. I drive a 2018 Subaru WRX with a number of upgrades. So far Im at 326whp and 314lbs of torque. This is on e85 and a small mixture of 93 pump. Now my questions the same, do I need to upgrade my injectors? I already upgraded the fuel pump but I feel like when I get into a strong pull the car kinda hesitates a little bit. Is this the injectors maxing our?
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