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Old 06-20-2007, 12:31 AM   #1
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Default Injectors too big?

Would 550cc Injectors be too big, or is it like everything else, nothing is too big
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Old 06-20-2007, 12:34 AM   #2
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Many people on this board and m.net use them with various EMS.
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Old 06-20-2007, 01:13 AM   #3
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There is such a thing as "too big" when it comes to injectors- rough idle and increased emissions.

550cc ought to be good for around 270 HP or so. Quite a few folks are running them 'round these parts. 440 and 460cc are the next common sizes down, and perfectly adequate for most sane Miata applications.
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Old 06-20-2007, 01:22 AM   #4
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I run 550cc RC injectors. Its all in the tuning.
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Old 06-20-2007, 01:24 AM   #5
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I don't have them installed yet but i got my RX7 550cc injectors for $150 after cleaning and servicing at cleaninjectors.com.
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Old 06-20-2007, 02:05 AM   #6
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I mean I wont be running 270 hp, but it would be nice to have bigger injectors incase I were to build my engine and get an upgraded transmission :-D haha

Those injectors with the MSPnP should do well and not have that bad of an idle?

89-91 RX7 550cc are direct plug in?
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Old 06-20-2007, 11:10 AM   #7
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if you can afford to build your engine and transmission, you can afford bigger injectors when you need them.... right?
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Old 06-20-2007, 11:33 AM   #8
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It would just be eaiser to get injectors that are more inline with the power you'd be running.
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Old 06-20-2007, 04:52 PM   #9
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I would like to run around 220. What would be a good injector for that?
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Old 06-20-2007, 04:53 PM   #10
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440 or 460
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