fuel injectors?

[wonton]

are these any good?

http://www.diyautotune.com/catalog/fuel-injectors-c-52.html?osCsid=1b1633532476eb2bca5cae3b034737e4

if so which ones would be the appropriate choice for me, i was wanting the RC 550cc, these are not in cc there in lbs!

or should i stick with the RCs?

[ben91]

550cc/min is about 52 lbs/hr.
Math:
550/10.5=52.4

I don't know anything about those injectors, but do know that Jerry wouldn't recommend anything that isn't good.

[nickt93]

Delphi makes original equipment for a lot of GM vehicles (they used to be a part of GM?). Seems that DIY Autotune offers quite a bit of GM OEM parts.

[redrumracer]

will these plug right in? or what needs to be done to make them work.(aside from a tuning capability)

[nickt93]

They likely won't "plug right in" (even the RCs that came with my FM kit had different harness connectors), but even so it is a simple splice of two wires. If you are nervous about splicing into the factory wiring harness, you can probably track down some harness connectors that will do the trick (plan on $40-70 for 4 of them).

Here is some info from the DIY website:

Here are some known applications for these injectors. Most will require tuning instead of being a "drop in and go," but they won't require fabrication, either.

BMW: M20, M30, M50, M52, S50, S52

Ford: 1986 through 1995 5.0 Mustang, 1992 through 1998 4.6 modular motor

GM: L98 TPI V8, LT1 and LT4

Mopar: 3.9, 5.2 and 5.9 Magnum through 1999

These are likely to fit many VW, Chrysler, Porsche, Audi, Volvo, and some Subaru and Mitsubishi applications as well. We hope to expand this list soon, but if your application is not listed here, please check the size of your injectors before ordering. If you have a motor where the injectors physically fit the intake but the plugs don't match, we sell plugs for these injectors in both crimp on and pigtail varieties separately.

EV1 connector EV1 pigtail

Even if your harness will not plug directly into these injectors, these plugs can be spliced into your harness to convert your engine to EV1 injectors as long as they fit your fuel rails and manifold. In that case these injectors wouldn't be plug and play, they would require a bit of splicing or crimping to existing wires.

[redrumracer]

thanks for the info nick, it wasnt the splicing so much but more or less if they fit in the holes.

[Doppelgänger]

Sean, what are you going to be using to control fuel?
I guess since you're looking at the RC550s, you already have that covered. So if you are looking for a direct drop-in and plug-and-play with no wiring involved, you can use 89-91 (S5) non-turbo RX-7 injectors which are like 460cc, or the S5 Turbo ones that are 550cc.

I used a set of S5 n/a injectors on my 96 and controlled them with a Apex-i SAFC and was running 10psi on a JRSC kit.

[RotorNutFD3S]

He's going with MS. Probably a PnP unit.

[simontibbett]

thanks for the info nick, it wasnt the splicing so much but more or less if they fit in the holes.

I hope you're aren't planning on running these with nothing else?

[Doppelgänger]

He's going with MS. Probably a PnP unit.

ahh ok. The RX7 injectors might be a good option for him, esp. the cost of them.

[Doppelgänger]

will these plug right in? or what needs to be done to make them work.(aside from a tuning capability)
speaking of stuff for you... either on miataturbo or the miata.net classified section, I saw a 99-00 LINK piggyback for cheap... might want to go look around since it's one of the few low-cost options for the 99-00 cars ;)
IIRC you can go up to about 310cc (toyota Supta 7MGE non-turbo) and still idle ok on the stock computer.

[N3v]

oh yeah I was talking to marty (the guy that used to drift the pink miata) and I think he still has his old link, he never managed to sell it. you can probably score it for cheaps now.

As for injectors, deatschwerks sells straight drop in miata injectors up to 600cc, but they're gonna be more expensive than rx7 injectors.

[RotorNutFD3S]

IIRC Links for OBDI (like Marty's) will not work with OBDII cars. But I could be wrong there.

[N3v]

ugh, i think you're right. man, those things are useless.

[wonton]

so what should i do? im gonna be running the MSPNP, and Walboro 190hp fuel pump, i can spend alot on RCs, or go with the RX-7 fuel injectors, what else is out there?

[RotorNutFD3S]

ugh, i think you're right. man, those things are useless.

They're not that bad. I run the Link EMS currently and so does Nick (well he will be again when he figures out what the heck is going on with his fueling issue).

so what should i do? im gonna be running the MSPNP, and Walboro 190hp fuel pump, i can spend alot on RCs, or go with the RX-7 fuel injectors, what else is out there?

Sean, sit down (since I know you have plenty of time ;) ) and read this whole thing: http://www.miataturbo.net/forum/t4288/

You can actually run your stock injectors, but they'll only be good enough for a 7-9psi setup (170-180rwhp). The 550cc 89-91 RX7 TurboII injectors are actually PnP for our cars. Part #195500-2020. Go search the RX7 forums to see if anyone is selling some. Be prepared to send them off for servicing though when you're ready to boost (most cleaning companies want you to install them as soon as you get them back because if you don't, you can risk them "sticking" after sitting for too long).

[nickt93]

They're not that bad. I run the Link EMS currently and so does Nick (well he will be again when he figures out what the heck is going on with his fueling issue).

There are a lot of folks that are down on the Link right now, but I still think it's a great platform. True, Megasquirt has a lot of capabilities, but a lot of MS users aren't tapping into that potential. I chose the Link for three reasons: 1) full support from FM (something you definitely don't get with MS, although there is a growing body of knowledge online, in forums, etc.), 2) easy to use (some may argue), and 3) inexpensive (so is MS).

If you are looking for 220-240rwhp, you'll be happy with either the MS or the Link. Watch for deals too - make a short list of stuff that you would be open to, that way you can pounce on it when a good secondhand deal comes along. A few weeks back, someone on Miata.net was selling a Link with all sensors, a keypad, and the seriallink for $400.

[wonton]

damnit! i should have kept the injectors from my 87 RX-7...................****....................i can go to a junk yard and get the ones from a non turbo!

[RotorNutFD3S]

Non-turbo RX7 injectors are only 460cc. Just to make that clear.

[wonton]

Non-turbo RX7 injectors are only 460cc. Just to make that clear.

i know, still a lot bigger than the stock ones i have currently!

[Doppelgänger]

damnit! i should have kept the injectors from my 87 RX-7...................****....................i can go to a junk yard and get the ones from a non turbo!


You MUST use S5/89-91 injectors... the connectors are different on the 86-88 FC and the impedence is different too.

[wonton]

ahhh, well i feel better about me not keeping those injectors now! :)

[Matt Cramer]

FYI, we tried putting the injectors on the link in the original post into a Miata. They don't fit the stock rails or manifolds as the diameter at the ends are too big. We have been wanting to carry some sort of drop in injector upgrades for the Miata, but need to find the right supplier.