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Discussion Starter #1 (Edited)
I picked up a brand new set of Injector Dynamics 1050x. I'm going from pump 93 and making the switch to E85, also picked up a walbro 450.

Does anyone have the scaling and latency for this injector?


I have a few questions....This is from the website

Injector Dynamics 1050x-
Nominal Flow Rate - 1065cc/min @ 3.0 Bar (43.5 psi) Using Gasoline at 52 Degrees C (125 Degrees F)

From Greg-Monochrome
Setting the scaling is simple. Just enter the rated size of the injectors you are running for pump gas. If you're running E85, take the rated size and multiply it by .7 and use that number. This will add 30% enrichment needed for burning alcohol.

Now...I have my AFPR set at 43.5 psi does that mean I need to plug in 1065cc into chrome or do I need to plug 1050cc?

do I set the injector scailing using this factor? 1065cc x .7 = 745.5 1050cc x .7=735

Since using E85 do I plug in 745.5 or 735 for the injector scailing or just use 1065 or 1050cc?

Also I'm not sure what injector deadtime to use? I sent a message to Injector Dynamics about what scailing and latency to use but figured someone might have the answer or used these injectors before?

This is for Chrome ECU.
 

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Discussion Starter #2
Should I go off of what the FIC 1050cc are?

FIC 1050s

Scaling: 1008

Latencies:
Volts ms
4.69 4.440
7.03 3.192
9.38 1.752
11.72 1.032
14.06 0.840
16.41 0.576
18.68 0.432

or Should I try using the number from the ID 1000?

ID 1000s

Scaling: 812

latencies
4.69v = 5.328
7.03v = 3.144
9.38v = 1.992
11.72v = 1.368
14.06v = 1.008
16.41v = 0.792
18.68v = 0.624
 

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My car is a money pit
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Latencies can vary pretty heavily between different injectors. I'm not saying they DO, but they can. Especially low Z compared to high Z. I'd do some more searching around, you're not the first to run these inejectors.

As far as scaling goes, if you want chrome to put in 30% more fuel, it needs to think the injector is 30% smaller than it actually is. That way 1 unit of fuel becomes 1.3 units, even though chrome still thinks it's putting in 1 unit.

So you need to plug in 1050 x .7 = 735

I would also advise that you do your first start on the leaner side. The closer you match your 1050 scaling, the less fuel you will be putting in. So maybe start with ~790 (25% more fuel instead of 30) and richen as you see fit. You don't want to wash out your cylinder walls, or any of the other numerous bad things that can happen with a really rich start.

Lastly, I will say to look at your cranking IPW, coolant temp compensation, and anything else that gets multiplied by your global scaling. If you have 30% compensation on top of 1050's... that's about as much as stock injectors are total... Generally you're good to about 750cc injectors without the ECU being too fussy but you get into 1xxxcc+ then you're gonna start flooding on every start for a multitude of reasons, a few of which I have listed.

Hope that helps a bit. I'll poke back in later today to expand if you have any questions
 

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Discussion Starter #6
I'll stick with the id1000 number and play with it from there.

ID 1000s

Scaling: 812

latencies
4.69v = 5.328
7.03v = 3.144
9.38v = 1.992
11.72v = 1.368
14.06v = 1.008
16.41v = 0.792
18.68v = 0.624

How much would I need to increase or decease the numbers by? For example on the 9.38v = 1.992 would I increase it to 1.998 or would that be too much?
 
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I am afraid I never ran that injector on chrome. My numbers in aem are just what ID supplied.
 

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His question is in regards to changes and how the amount of change has x effect. I don't know the answer. I don't know how much a .1 change would have compared to a .05 change. Yes I know .05 is half of .1...
 

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Discussion Starter #10
His question is in regards to changes and how the amount of change has x effect. I don't know the answer. I don't know how much a .1 change would have compared to a .05 change. Yes I know .05 is half of .1...
exactly, I'm not sure how much to increase or decrease the numbers by.
 

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Discussion Starter #11
The ID 1050x are installed along with the walbro 450, going to take it to fill up on E85.

I'm going to use these numbers in chome. 900x.7=630 so I can raise the number if needed from here.

Scailing 630

4.69v = 3.816
7.03v = 3.144
9.38v = 1.955
11.72v = 1.125
14.06v = 0.925
16.41v = 0.795
18.68v = 0.550
 

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Dont worry about getting the numbers perfect, you're going to have to change them when you tune the car. Matching wot afrs with your commanded afr table will be done by changing scaling, then play with the dead time to get the trims in line.

If you are using anything other than a mitsu maf you'll have the headache of dialing in airflow and fueling at the same time.
 

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Discussion Starter #13
Dont worry about getting the numbers perfect, you're going to have to change them when you tune the car. Matching wot afrs with your commanded afr table will be done by changing scaling, then play with the dead time to get the trims in line.

If you are using anything other than a mitsu maf you'll have the headache of dialing in airflow and fueling at the same time.
I got Jester's maf installed along with the chrome.

I read that they said to adjust the MAF smoothing tables Low and Mid to adjust the low and mid fuel trims? I believe it said the EVO community likes to mess with the latency values, but it made more sense to adjust the MAF smoothing tables to get the trims with in the +/-5%
 

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Discussion Starter #14
The AFR at idle improved to 14.5 for a few minuets but now that the car is warmed it hovers around 16-17.5 ish, I started datalogging the car for 20 minuets(idle, not crusing) these are the results. I won't have to time to do a 20 minute cruse until Thursday when I'm off work.

Evocan log(google drive)
https://drive.google.com/open?id=0B8...TRPeWNWX19Oc2s



I also want to add for some reason, my AEM Adjustable Fuel Pressure Regulator isn't working correctly...The fuel pressre is 48psi with the vacuum hose disconnect or connected...It will only let me raise the PSI but it won't go any lower then that...Do I need to buy a new AFPR? I even switch vacuum sources and it didn't help.


Does this mean I need to raise or lower the scaling to bring down the AFR at idle?
 
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