injector difference - Subaru WRX Forum
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post #1 of 2 Old 08-11-2005, 06:56 PM Thread Starter
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injector difference

I have had 525cc injectors on my car for a good 3 months now. I have a UTEC and i know that the programs are set for the sti 550cc. Is it that remarkable of a difference or am i safe with the 525s. I have been told time and time again that i should upgrade to the larger ones becuase the fuel may not be keeping up with what the utec is telling the engine to do.
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post #2 of 2 Old 08-12-2005, 06:26 AM
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Hmmm, the only thing I know is that the STi 550cc injectors are actually rated around 565cc's if you tested them for flow rate. So that's where you might find some situations where your 525's can't keep up. But then again your 525's might flow more than advertised too. Hard to say really...
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