Working on piecing together a shopping list for parts and figured id ask here for which injectors would be best for the build


CJ Motorsports complete fuel system w/ FPR
Walbro 400lph in tank fuel pump
GTX35R single turbo kit
RE track v-mount
Greddy Elbow
HKS Twin power ignition
Apexi PFC
Resonated midpipe
HKS Hi Power exhaust
GM 3 bar map sensor

RX7store sells the CJ motorsports fuel system with options for 850cc/1680cc bosche injectors or 1000cc/2200cc injector dynamics, should I run with one of these choices or get do something else?

 

how much power/boost are you planning to run?

 

not sure to how much boost, hopefully i'll make 450rwhp or more, this is on stock ports btw

 

http://www.injectordynamics.com/tech.html

Might want to check out this web site. Several on this forum have gone to IDs. Looks like you should have the hardware for them.

 

A few thoughts....

Injectors - I highly recommend not going with the 850cc/1680cc bosche injectors. I currently have this configuration with an FJO injector driver on my PFC and wish that I would have went with the ID's at the time. First of all, 850cc is too large for a primary. Take a stroll over to the PFC forum and you will see many threads of individuals just like myself with a pig rich idle and low load and rpm driveability issues. Secondly, This is old technology. These injectors were designed in the 80's... They simply aren't a good choice. I personally will be switching over to 720cc/2000cc ID injectors when I start running over 20psi. Why Rx7store chooses the 1000/2000 combo on the ID's is a little unusual. The 720's still provides enough fuel for over 500whp, and keeps your primaries small enough to be very tuneable. The fact that the EV-14 based ID's themselves are extremely more controllable helps as it sits. I have heard of the 1000's as primaries being still very tuneable, but for me, I wouldn't risk it. That is a huge injector for the demand of fine tuning for street driving and idle. Everyone seems to love the 720/2000 combo.

Build - You're parts list looks good. However, your power goals look a bit high for pump gas and stock ports. Though I don't know much about the newer GTX's, I would be surprised if you hit those numbers without auxiliary injection. I know you have seen my build and numbers. On a conservative tune, I am limited to 15psi. Remember that all tanks of gas aren't created equal. I assume you have a good tuner lined up. Keeping that margin of safety will keep you from rebuilding your engine and possibly turbo...

It's ALL about the auxiliary injection with a mid-framed turbo. My 35R was JUST stepping into it's efficiency at 15psi. Once ready, I will be seeing what 25psi does. And my manual pre-turbo water injection will make it all possible on pump gas.

 

I am also interested in hearing more about the new Walbro.... The word Walbro is like the name Adolf. It's just hard to get past sometimes.

I personally will be running CJ's tank insert with dual Supra's.

 

oh forgot to mention aquamist water/meth injection system on my build as well, that makes a huge difference ****, planning to run 50/50

 

your most def right that would be aiming way too high on just pump gas without aux injection. Aquamist HFS3v2 water/meth injection system w/ rx7 was one of the first things I purchased for the upcoming build, already got it sitting at home waiting for me(currently deployed to Afghanistan gonna be home in Jan)

 

If you can keep the stock primaries and run ID2000's I think that would be the best setup. Should idle AND flow.

 

Ditto.

That combo will support more power than that GTX35R can make.

If the injectors are purchased through us we supply a good PFC base map for them.

 

awesome sounds good and that combination will work with the CJM stage 1 fuel rail setup?

 

im probably wrong but i thought the ID's has to run a minimum of 75psi fuel pressure. I would like to know as im looking into them as well

 

https://www.rx7club.com/showthread.p...ector+dynamics

 

Hotwheelz,
Injector Dynamics claims their injectors can run well at high fuel pressures (some older injectors won't open against high fuel pressure), but that doesn't mean that high fuel pressure is required.

xIceHoundx,
My car has ID1000 primaries, and they run just fine at 45psi base fuel pressure. I'm not familiar with the quirks of the PFC, but with stock ports and an AEM EMS my car idles smooth at 13.0 AFR when the engine is warm.

 

when i go single i was planning to go stock 550 and id2000, seems like more than enough fuel even at 20psi+. plus running 550/2000 still gives you more fuel than 850/1600s

 

Xcessive LIM

6x ID 1000's

 

I'm putting together the C.J. rail and C.J. dual tank setup w/ supra pumps, xcessive LIM
Starting with 850's and 1600's.

 

rx8 450's for primaries, xcessive lim with 4x 1000 ID's. problem solved.

 

Run all ID injectors if possible, you wont regret it.

Their quality is superb.

 

DO NOT run 850's as primaries. You will regret it with a street car. Reed my post above. And reed this...

https://www.rx7club.com/showthread.p...=850+primaries

 

yea but its crazy expensive for them all.

 

When you do the fuel injectors I have a bunch of options that you can do. I have all the ID injectors so you can do different primarys if you want along with the 2200's.
Just add a meth kit and you could push 500RWHP on pump gas.

 

If you can't afford injectors, an FD isn't what you should be building.

Fuel delivery is THE most important part of keeping your car alive.

 

Sounds good Jason, ill be ordering just about every part for my build from you here in january, about 12k worth of parts from rx7store and 1.6k or so from apttuning, hopefully you can hook me up with a discount ; ) I'll send you a complete list of what I plan to order if you need

my goal is def to hit 500rwhp on pump gas with this build in combination with water/meth injection.

 

When your ready, call me and I will hook you up and we can talk about your setup.

Thanks