Bigboymikey

Hi, So i've been searching through the forums, and keep getting mixed answers with what i'm trying to figure out, so i just installed a complete ry wire engine harness, when removing the old butchered harness, i found resisters wired before the injectors, upon removal of my injectors which are 850cc primary and 1600cc secondary i noticed they were bored out. and leaking ( spark plugs were fuel soaked after over a week of cleaning them and disconnecting fuel pump relay, so at this point i have decided i want to do high impedence injectors. i have a cx racing LIM with a single fuel rail. i understand i will need to advance injector timing when running my primary injectors in the same rail as my secondaries, i have a PFC so i understand i may have to raise my idle a bit and it'll take some tuning to smoothen things out.
so my questions are

1) can anyone help me find a primary injector block off kit, or can i get away with leaving the stock primaries in with the fuel line blocked off and the old injectors in place?

2) I'm looking in the ev14 injectors and 750cc primary with 2000cc secondary, so from what i can find it seems 750 is the biggest safe bet with the pfc for drivability concerns,
can anyone clarify for me? I hear IR performance is a good vendor to go through. any advice would be appreciated

3) ID vs bosch ev14 from what i understand the ID's are better but with such a minimal margin it is not cost efficient.?

4) i plan on running my set up from 1) pump to 2) filter to 3) fuel rail to 4) fuel pressure regulator, from there ill run in parallel to a fuel pulse dampener. then return
if i'm missing something important could someone advice me, also what fuel pulse dampeners would be recommended.

5) what should i regulate system psi to? about 40-45 psi is what i have found reading around the forum, but i see people going anywhere from 30-60psi or mention it at least so clarification would be awesome

any other tips people could advise me with would be awesome
I'm going for best bang for the buck, but i'm not going cheap, I'm a engineering student, but i work full time as a mechanic (UTI Grad) so i have decent income and understand you get what you pay for. I'm Mechanically, electrically and computer incline. I'm just reading alot of information pointing in different directions, and need help clarifying it.

Also goal is for about 400-500whp on 92 pump gas (washington shell v power) with water/methanol ( for reliability not to crank up the boost) on a atkins rotary large street ported motor with 3mm apex seals with a bw s362 sxe turbo will be a street car with occasional track use.

Any and all help is greatly appreciated thank you very much!!

- Mike

misterstyx69

iTrader: (142)

I'll answer with what I have learned..it is a starting point anyways.I'm not a GURU tuner but I do read a lot..haha!
You can go with 1000/2000 and tune the map to the Ev14 injectors.I used Injector Dynamics Injectors (ID injectors).
Now people said this was overkill but Hey,If you can tune them the same as a lower flowing injector (750) without issues then you have some head room for modifications later..right?
They were excellent on my TII Build which gave me 357 on stock internals with a Haltech...very tuneable.
Only reason for ID's was they were flow matched.
Your Fuel regulator usually will have a FPD built in so you may be able to drop that from the list.
Pressure is associated with the tune..but usually about 40-45.

I ran a parallel system at the engine to the rails and then the lines met at the regulator and then single line return.(after reg).
Your old setup had resistors so that means your ECU was accepting HI Impedance injectors.
You could check the Specs to see if the ECU will accept LO if you desire to run LO..Otherwise it is recommended to get ALL injectors the same impedance so you have no variation.

And Yes..IRP is a good dude to deal with!

Bigboymikey

will the apexi power FC handle 1000cc primary injectors properly with a relatively clean idle and good drivability response? I want to go as large as possible for future proofing, but still keeping the car streetable on pump gas.

misterstyx69

iTrader: (142)

As far as I "know" the ECU should be able to do it no problem.
It's more in the Transitional stages that you have to watch when tuning.Going from one injector to the other set.(Pri to sec ).
Any Capable tuner should be able to give you more info on setting up your ECU for these new injectors.
Things like Duty cycle and staging really can be fine tuned to get a smooth transition and flawless acceleration so when you are putting your foot to the floor it doesn't Buck,burp or fart.!

Hmm..I need some tuning..at my age I do all that..haha!

Aaron Cake

iTrader: (1)

You don't need 1000CC primaries. And there are few ECUs that can get a car running on 1000CC primaries on gasoline with that I would consider acceptable AFRs and idle. At 1000CC, you're just at the limit of what the injector can physically do for small pulsewidths.

No sense "future proofing". Injectors are inexpensive and easy to swap. Fuel maps can be rescaled. Don't battle with too much fuel now for the possibility of needing it sometime in the future, or never.

450 - 500 HP is easily achievable on stock primaries and large secondaries. If you are running 2000CC secondaries than stock primaries are fine and will make things much easier to tune down low.

You should not remove the stock primaries. Keep them in their location at the ports. If you stick them up in the intake manifold you will just end up with fuel puddling and having very little control over AFRs at low airflows.

Generally static fuel pressure should be around 40 PSI.

Bigboymikey

After talking to IRP i decided to go with 750cc primaries and 4 1000cc secondaries with a full function primary rail. my next issue is the fuel lines. I'm having trouble finding fuel fittings, for running a parallel system.

misterstyx69

iTrader: (142)

Just ask IRP if you are going to get that Fuel System for fittings.
He should be able to steer you in the right direction.

Rikk

iTrader: (2)

anplumbing.com has a good selection and is very helpful over the phone, if you can't find something, I'm sure Ihor will point you in the right direction as well