NBs' please help. What to do about fuel?!!? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 03-07-2007, 10:02 AM   #21
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Originally Posted by 4sfed5 View Post
Just a note to say that the 323 GTX injectors above are generally regarded as 330cc not 360cc as above.....the red top 323 GTR/4agze are 365cc but are low impedance so youll need a ballast resistor pack to run them.

WitchHunter flowed them at 360cc

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Old 03-07-2007, 11:07 AM   #22
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go back to the Other Forum, punk!
LOL, Make me!

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Old 03-07-2007, 12:50 PM   #23
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Ask intelligent questions and you get intelligent answers... go figure!

Mark
Yeah, I guess MOST newbs get whats comming to them! haha
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Old 03-07-2007, 08:57 PM   #24
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Originally Posted by olderguy View Post
I sell a clamp for $65. My email is in my profile.

The only problem you might have with fuel is a defective pump. You should really get a fuel pressure gauge wired in to watch it. I have several friends that have replaced pumps in their Mazdaspeeds with the same type system.
so for my car to run correctly, do I need this o2 clamp? Or is it just the injectors that need to be upgraded?
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Old 03-07-2007, 11:46 PM   #25
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WitchHunter flowed them at 360cc

Thats what im running in my car..... the consensus with the 323 club is that they are infact 330cc and the red top GTR ones are 365cc.....

Having said that though, when i had mine cleaned and flow checked they flowed at 395cc at 3 bar, so go figure!
i thought that the stuff they used must have been thinner than standard flow checking fluid or something.
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Old 03-08-2007, 04:08 AM   #26
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so for my car to run correctly, do I need this o2 clamp? Or is it just the injectors that need to be upgraded?
I don't have, it runs fine, I don't think I need one. Mine's a little rough stransitioning into boost when not fully warmed up, but I always warm it up before driving so it's not a problem for me.
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Old 03-08-2007, 01:59 PM   #27
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I don't have, it runs fine, I don't think I need one. Mine's a little rough stransitioning into boost when not fully warmed up, but I always warm it up before driving so it's not a problem for me.
You said that you're running the Supra green top 310's? Do you think if you were to put the stock injectors back in your car as it sits now, you would be having the same problem as I am? And as far as the EMU goes, what other advantages than being able to run bigger injectors does it have over the EMB?
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Old 03-08-2007, 08:45 PM   #28
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I had the same problem as you did, but I fixed that with careful tuning. As far as advantages of emu, I'm not too sure. Never looked that much into emb, but yeah bigger injectors, auto tune, maf elimination are things that come to mind.
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Old 03-09-2007, 02:53 AM   #29
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i had some boost transition hiccups when cold and it was because the o2 clamp was set a bit rich, so i leaned it out a bit and retuned the rest of the boosted rows.
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Old 03-12-2007, 12:40 AM   #30
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You CAN use a FPR on a return less system. It has to be used in conjunction with an external fuel pump. But it does work.

My suggestion would be to upgrade injectors or use BEGi fuel system, and switch to the EMU.
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Old 03-12-2007, 10:13 AM   #31
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Stephanie, that is very interesting. How do you plumb the FMU in a returnless system such as in the NB?
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Old 03-12-2007, 11:03 AM   #32
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I run 370cc injectors and the emanage blue on my car. Runs fine.
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Old 03-13-2007, 01:52 PM   #33
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yeah, how might you plumb that up, please, share with us stephanie...hahaha
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Old 03-13-2007, 02:02 PM   #34
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there is also this crazy guy:

http://www.aeromotiveinc.com/pdetail.php?prod=32
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Old 03-13-2007, 02:04 PM   #35
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btw, this is how you plumb one:




basically it goes in it's own loop just before and after the inline....then when it starts to clamp off, some of the gas enters the fmu and gets clamped causing the inline to increase the pressure.

Last edited by Braineack; 10-02-2007 at 04:01 PM.
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Old 03-13-2007, 02:21 PM   #36
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ahhh clever!

Scott, why don't you put that in your FAQ and then we can refer NB owners to it.
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Old 03-13-2007, 02:23 PM   #37
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maybe i will.
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Old 03-13-2007, 02:26 PM   #38
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wonder if running 100psi fuel pressure into the FMU will have any negative effects.

still pretty durn clever
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Old 03-13-2007, 03:11 PM   #39
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i'm not good at those illustrations, any pictures?
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Old 03-13-2007, 06:28 PM   #40
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Quote:
Originally Posted by Ben View Post
Stephanie, that is very interesting. How do you plumb the FMU in a returnless system such as in the NB?
Similar to what Braineak posted but not quite. The fuel supply is interrupted between the tank and fuel rail. During inturruption it makes a loop thru the FMU and Fuel Pump. It is very complicated to explain, but let me look to see if I have some diagrams.
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