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Old 01-26-2009, 06:39 PM   #1
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Default Stock evo injectors??

Hey guys, did a search, turned up nothing, will the stock injectors out of an evo 8 (565cc) work on a miata? I see a lot of people running 440's (stock 4g63 injector) Dont stone me, i just sold my 11sec 400hp 4g63 mirage and got a miata that im building a kit for as we speak. Thanks for the help.
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Old 01-26-2009, 06:47 PM   #2
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Miata Turbo FAQ: Fuel Injectors

I didn't see it on the list, but there you go anyways.

100 posts. WOOT WOOT.
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Old 01-26-2009, 06:58 PM   #3
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I honestly dont know either, but have heard of the wrx 440's working
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Old 01-26-2009, 06:59 PM   #4
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depends what year your car is and if they are high or low impedience and i doubt they would be just plug and play but you could make them work
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Old 01-26-2009, 07:03 PM   #5
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why would year matter? people use the newer miata injectors on the older miata's all the time, dont they?
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Old 01-26-2009, 07:10 PM   #6
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they are too short. maybe 4mm or so...maybe if the fuel rail spacers were removed, but it's a long-shot.
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Old 01-26-2009, 07:33 PM   #7
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I run 550's so there not to big, I even herd of a guy running 1000's I think his user name is CEO, but he's got a crazy set up.
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Old 01-26-2009, 09:52 PM   #8
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oh wait I'm thinking of WRX and STi injectors...i dunno what the EVO injectors look like...
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Old 01-26-2009, 10:06 PM   #9
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Old 01-26-2009, 10:08 PM   #10
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they look like they work, other than the connector at least, but they may be short as well, it's hard to tell.
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Old 01-26-2009, 10:29 PM   #11
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If the DSM 450s work... those will. I like the 560 evos alot over the older dsm 450s. Better spray pattern for smoother idle and smoother everything. Its a 4 point spray design vs single center pintle.

This is from honda useage though... i run rx7 550s on the miata.
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Old 02-04-2009, 03:44 PM   #12
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evo injectors will not work they are peak and hold not saturated i looked into it they are not plug and play atleast u could use a resistor or something maybe i forget wat i read on how to use them for the miata but its more trouble than its worth
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Old 02-06-2009, 12:38 AM   #13
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There is a way to make EVO injectors work. We did it on Ivan's car. You do need to use a specific resistor pack, but it can be done. I think the final cost of 440/460 cc injectors and resistor pack was around $200.00.
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Old 02-06-2009, 01:04 AM   #14
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ya because they are peak and hold not saturated i figured u just need resistors or something its just more trouble than they are worth. just go with rc's if u want something big thats wat i had in my evo the 750s and 1000s are great. obviously not many guys on here need that big but im sure their 550s are great too
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Old 02-06-2009, 03:52 AM   #15
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used Deatschwerks for both my 650's and 750's and loved em
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Old 02-09-2009, 07:41 PM   #16
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The stock Evo injector will work but you'll need new clips and may need ballast resistors. I bought RC750's (part # PL4-0750D - D for Denso type) which are listed as suitable for the Evo after advice from another miata owner running them.

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Old 02-09-2009, 08:14 PM   #17
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Yes you will need resistors--the stock Evo injectors are low impedance.

Anyone tried the Bosch saturated injectors sold by injectordynamics.com? No affiliation, etc. Heck, I don't even know if they'd fit a Miata. They're eons more modern than the injectors sold by RC, FIC, etc.
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Old 02-12-2009, 12:45 AM   #18
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I'm pretty sure they're high impedance, I'm sure I would've checked that prior to using them. Work great on my car.
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Old 02-12-2009, 01:44 PM   #19
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They're low impedance, and they're used with a 6 ohm resistor pack and saturated drivers from the factory.
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Old 02-12-2009, 08:15 PM   #20
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Well damn, I've been running them for well over a year w/o resistor packs, what kind of damage will that do?
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