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Old 12-02-2006, 03:39 PM   #1
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Default 1999 Miata Injectors in 90 1.6 Miata Turbo

Hi Guys,

Are there any issues with installing 1999 redtop Miata injectors in a 90 1.6 Miata turbo vehicle? I know that the 94-97 Miata 1.8 230cc injectors are a drop-in upgrade but I am wondering if there are any known issues with using the 99 1.8 injectors instead since I can get my hands on them. I assume they are also a drop in replacement.

Your comments are welcome.
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Old 12-02-2006, 05:47 PM   #2
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Hey. There's a pretty good (bad-***) FAQ available here:

https://www.miataturbo.net/forums/showthread.php?t=4288
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Old 12-02-2006, 06:03 PM   #3
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I already answered this in the other forum.

Don't believe me? Try the SEARCH function. You'd be suprised what you can find.
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Old 12-02-2006, 06:05 PM   #4
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the are supossed to have a better flow pattern since they run at 60psi vs. 50psi on all others.

but they flow signifigantly less than most others 1.8s. 240cc vs 265cc
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Old 12-02-2006, 08:07 PM   #5
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Even though they look different, they fit just fine and work just fine too without any idle issues. I hear that they can make some pretty decent power too.
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Old 12-02-2006, 08:37 PM   #6
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yes they can surprisingly (again, mostly likely flow pattern). hey, was bruce using the 99's or 94's?
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Old 12-02-2006, 08:53 PM   #7
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94-97
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Old 12-02-2006, 09:34 PM   #8
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why do you think there is a difference in flow pattern?
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Old 12-02-2006, 10:59 PM   #9
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they are thinner and don't look like a typical miata injector. I think they have different pintles/nozzles and were used to flow at 60psi on the 99-00 miatas.
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