Just added to our line

Injector dynamics "saturated" High Impedance725cc and 1000cc injectors. What makes these injectors unique is comprehensive data sheet to aid in setting up fueling for your high boost Miata engine. The 1000's are just the ticket for those of you running E85.
Very short minimum opening times will let just about any ECU control them for a good idle. Good to 120psi. EV-1 injector clips included for PNP install

 

How would you recommend setting these up in a fueling system for an '03? Keep the in tank regulator and stay returnless or something else to raise the rail pressure?

 

These are PLUG AND PLAY????!!!

I think I'll be contacting you very soon

 

These are the ****, I've been using them for a couple of months now. My 255 Walbro/stock FPR gives a funky idle, but these are no more difficult to idle than the 750s or the 460s I had before them. There's really no reason to do anything but these - perfect idle and all the fuel you will ever need.

 

Depends on fuel needed. I don't have any specific recommendation one way or the other. I do believe in lots of fuel pressure though. It's like free horsepower. Everything else being equal, more fuel pressure produces smaller droplets which cool more, burn faster requiring less timing which reduces knock and cylinder pressure before TDC.

The OGK gets a set of these and will run 70psi with a Bosch 044. The Bosch 040 will run to 94psi.

 

You have an NA stock FPR?

 

The setup I was thinking of was:

Remove the in tank regulator
Use my walboro 255hp
add a pierburg pump inline
go to AFPR which goes to rail and tank return
run 90psi on your ID1000s

Goals are "maximum boost" for my gt30.

What do you think about that?

 

ID1000s here. Idle speed and afr was more stable than my Marren 440s. E, these are true pnp, no need to even remove the black plastic grommet/bushing down near the tip? If not, and the clips are pnp, you will sell them like hotcakes.

 

BTW, I didn't see duty cycles above 65-70% on my ID1000s, 287whp pull, E85. IIRC, we ended up with a base fuel pressure of 50psi, car off and no vac present. gaeflora, you should be able to use those numbers to project if the ID1000 is enough fueling for your goals.

 

I didn't compute the flow but 90psi with 1000's sounds like enough fuel for about 700hp.

 

Scaled from my car w/ these injectors, 90 psi = 885 hp (gasoline).

 

Go figure... i have an issue with my current injectors.
VENOMS ARENT REAL INJECTORS. you know who you are.


Ordered a set of these for my tune date for next weekend.... Thanks Emilio!
Now I need to get my higher boost map sensor wired in.

 

Don't forget that injector flow is proportional to the *square root* of absolute fuel pressure minus manifold absolute pressure.

 

Yup, that's how I computed it:

400 crank hp / 65% dc = 615 hp at 43.5 psi

sqrt(90 / 43.5) * 615 = 1.438*615 = 884.6 hp

I made the assumption that the fuel rail pressure would follow manifold pressure, as God has intended it.

 

Ok so can one of you translate that to a noob:

approx how well will these work for me on a 2000 walbro255 stock fpr stock lines/rail and these injectors using e85? This will be on a 3076 turbo.

 

Very well. Get the 1000's.

 

These are 2000cc sewer mains, but you get the idea regarding idle quality and control.

 

That's pretty damn impressive.....

 

JUST ORDERED THESE

Please let me know when I should be receiving them (unless they're in stock and I'll get em in a few days)

Thanx