Anyone have issues with Rx7 550cc injectors? - Miata Turbo Forum - Boost cars, acquire cats.

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Old 04-27-2014, 12:32 PM   #1
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Default Anyone have issues with Rx7 550cc injectors?

I'm ready for more boost (12-14psi) and I was curious to see if a set of rx7 550cc off of ebay is an appropriate option.

I've read about mixed results with them (idle issues, and some just not working properly) as well as some people saying they don't have any issues with them.

Can I bite the bullet? or should I spend my money on a different option?
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Old 04-27-2014, 12:40 PM   #2
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Just don't.
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Old 04-27-2014, 12:49 PM   #3
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That's all I needed, thanks.
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Old 04-27-2014, 03:30 PM   #4
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They're probably the cheapest option, or 440 rx-8 injectors. I've been using them for a few months and theyre OK. I'm looking to upgrade already though.
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Old 04-27-2014, 04:20 PM   #5
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What size turbo do you have? You can buy new yellow rx8 injectors for about $35 on rock auto. Those will be much better then the rx7 ones.
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Old 04-27-2014, 07:46 PM   #6
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I'm running a stock '82 280Z Garrett Air Research T3 Turbo (60 comp trim and .63 turbine trim) at 7ish psi.

Needless to say, I'm working my poor injectors hard atm.
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Old 04-27-2014, 09:41 PM   #7
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Quote:
Originally Posted by shuiend View Post
What size turbo do you have? You can buy new yellow rx8 injectors for about $35 on rock auto. Those will be much better then the rx7 ones.
Is that really for an injector itself and not a rebuild/cleaning service?

2008 MAZDA RX-8 Fuel Injector
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Old 04-27-2014, 09:44 PM   #8
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Yeah I noticed that. Looks like its closer to 50$, but still not bad.
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Old 04-27-2014, 10:05 PM   #9
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Quote:
Originally Posted by Togeneral99 View Post
Is that really for an injector itself and not a rebuild/cleaning service?

2008 MAZDA RX-8 Fuel Injector
Curly made a thread recently where they are discussed. When I briefly looked around the time of the thread I could have sworn they were around $35. I could be off though.
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Old 04-27-2014, 10:10 PM   #10
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Just curious cause if they really are that cheap I think id be all over them!
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Old 04-28-2014, 02:24 PM   #11
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Quote:
Originally Posted by shuiend View Post
What size turbo do you have? You can buy new yellow rx8 injectors for about $35 on rock auto. Those will be much better then the rx7 ones.
What's wrong w/ the OEM 460 or 550cc RX7 injectors?
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Old 04-28-2014, 05:24 PM   #12
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They are EV1 technology. Sure they will work, but there are better options out there. From a quick glance at rockauto it looks like there are a few remanufactured RX8 ones for <$50, but I don't know the difference between the primary and secondary ones.
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Old 04-29-2014, 12:51 PM   #13
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Default DSM FIC IS125-0650 injector. Any good and fitment to a Miata?

wrong post, please remove
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