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Old 11-04-2008, 12:39 PM   #1
mpaone
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Lightbulb flow tested 440 cc gray's

Hello all, with all of the different flow numbers running around on the EJ20G "440" injectors, I decided to send one to Deatschwerks to get flow and latency testing done.

Since I bought their 650cc side feeds I wanted to compare apples to apples when adjusting my Power FC. So here is the data.

440 flow: 453 cc at 3.0 BAR
440 latency: 9V-1.64ms 10v-1.49ms 11v-1.37ms 12v-1.26ms

650 flow: 650 cc at 3.0 BAR
650 latency: 9V-1.54ms 10v-1.38ms 11v-1.27ms 12v-1.15ms

So, in essence my settings will be 69% (450/650*100) and -.11ms (1.15ms-1.26ms).

Hope this helps clarify some things and does not add confusion to an already confusing (for me at least) topic.

-Mike.
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Old 11-05-2008, 02:22 PM   #2
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no no very helpfull

need to do the same thing for ej20k injectors and sard 650s

what were the stock latency numbers in the power fc
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Old 11-05-2008, 02:32 PM   #3
mpaone
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Quote:
Originally Posted by Jaxx View Post
no no very helpfull

need to do the same thing for ej20k injectors and sard 650s

what were the stock latency numbers in the power fc
I don't know since they were changed (after the tune). I assume 100% and 0 since the PFC should be tuned for 440's

-Mike.
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Old 11-05-2008, 02:48 PM   #4
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what is your pfc version?

i took the numbers out of the k and put them along yours



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Old 11-05-2008, 05:48 PM   #5
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Impreza A-C (mine is an STi ver 2 RA engine).

-Mike.
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Old 11-06-2008, 11:21 AM   #6
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i meant the revision

for example the rom above is 7.20

mine is a 4.02A

the older Gs are different than the later ones ..

you are using datalogit right?
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Old 11-06-2008, 11:37 AM   #7
mpaone
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Quote:
Originally Posted by Jaxx View Post
i meant the revision

for example the rom above is 7.20

mine is a 4.02A

the older Gs are different than the later ones ..

you are using datalogit right?
I'm just using the commander. My tuner has datalogit but I do not have access to it. Now my car is out of commission while I do the coil conversion so I won't be able to look at the settings until this weekend.

-Mike.
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Old 11-06-2008, 05:10 PM   #8
Eatoniashoprat
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I've got the ej20g Power FC, I can let you know in about a week when I get home what the stock pfc values are.
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Old 11-08-2008, 01:00 AM   #9
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I'm swapping out an EJ22 turbo for a (I think) a EJ20G in my 94 legacy the ingectors on the ej20 are grey and the ones on the 22 are pink I am going to try running it on the stock canadian comp till I can afford to buy more stuff (ECM,boost controler,intercooler,e.t.c) all the conections are the same prettymuch cause I took out the harness off the ej20. are the Ohm ratings on these Injectors too different to use????
I am also trying to make the individual coil packs run the wasted spark off the pack!

any help would be greatly appreaciated thank you!
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Old 11-08-2008, 11:22 AM   #10
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thanks for posting that into this thread about injector lag time
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Old 11-08-2008, 08:58 PM   #11
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Although I got my stock 440's back and the data sheet matches what they sent me something is up.

The reason I say that is the car ides like crap at 69% and -11ms. I slowly upped the lag and at about +.02 ms it smoothed out.

SO either the formula is wrong (not likely since others have used this with success) or my 650's were different...that is not 1.15 ms at 12v. I'm installing the AVC-r tomorrow and having it tuned so we'll see what comes of it.

BTW my PFC is EJ20G version 2.40A , FC commander2 version 8.13

-Mike.
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Old 11-09-2008, 01:31 AM   #12
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I thought that "zero" in the PFC was the setting for that particular car's stock injectors?

So, 440cc on an EJ20G, with an EJ20G PFC and an EJ20G MAF should have 0 for both size and lag. AKA zero correction?
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Old 11-09-2008, 03:27 PM   #13
mpaone
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Quote:
Originally Posted by RallyColtTurbo View Post
I thought that "zero" in the PFC was the setting for that particular car's stock injectors?

So, 440cc on an EJ20G, with an EJ20G PFC and an EJ20G MAF should have 0 for both size and lag. AKA zero correction?
Yep, and your point? I'm using 650cc from Deatschwerks.

-Mike.
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Old 11-09-2008, 03:37 PM   #14
RallyColtTurbo
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Quote:
Originally Posted by mpaone View Post
Yep, and your point? I'm using 650cc from Deatschwerks.

-Mike.
Oopps. Got lost in the posts.
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Old 11-09-2008, 07:39 PM   #15
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the difference between two negitive numbers is positive value
should be +.11???

right???



Quote:
Originally Posted by mpaone View Post
Although I got my stock 440's back and the data sheet matches what they sent me something is up.

The reason I say that is the car ides like crap at 69% and -11ms. I slowly upped the lag and at about +.02 ms it smoothed out.

SO either the formula is wrong (not likely since others have used this with success) or my 650's were different...that is not 1.15 ms at 12v. I'm installing the AVC-r tomorrow and having it tuned so we'll see what comes of it.

BTW my PFC is EJ20G version 2.40A , FC commander2 version 8.13

-Mike.
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Old 11-10-2008, 10:18 AM   #16
mpaone
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Quote:
Originally Posted by Jaxx View Post
the difference between two negitive numbers is positive value
should be +.11???

right???
That would make sence but the initial values he gave me for the 650's did not have a "-" by them so I assume that was not a negative symbol but jsut a spacer between the voltage and latency number.

-Mike.
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Old 12-12-2008, 09:27 AM   #17
mpaone
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Lightbulb

Hate to bring this back from the dead but I had a revelation last night.

So as I stated above the "Correct" latency setting in my PFC wouldv'e been -11 (really 10 or 12 since the PFC only had even increments) BUT it ran best at +8, then shortly afterwards 10-12.

Now that I have a new alternator and battery, idle is a little rough at those settings. SO... the voltage was obviously lower on my old battery/ alt. causing the latency to be higher as time passed and explaining the difference.

That's my theory anyway. I'll know for sure tonight since I will adjust latency again (down) and see if it fixes the slightly rough idle.

-Mike.
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Old 12-15-2008, 10:55 AM   #18
mpaone
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That worked. Only adjusted the latency from +12 to +8 but it idles much smoother.

-Mike.
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Old 12-16-2008, 05:39 AM   #19
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What happens if you recalculate with 380cc instead of 440cc for the grey tops? Do your numbers then add up to your current settings?
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Old 12-16-2008, 08:59 AM   #20
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i have changed my 380cc injectors for a 550cc set, I have no problemes with idle or anything else, but havenīt corrected anything in the pfc, and ait runs great! should i change it or leave the set up like it is?
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Old 12-16-2008, 10:48 AM   #21
Jaxx
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marnix its not fuel flow its the time that it takes the injector to cycle open/closed
he also had them both tested because he was adjusting via a percentage.. the actual numbers aren't as important as the percent


colchon
first you didn't have 380s you had 440s
second yes you should change you settings or have it changed by some on who knows what they are doing

the 380 number is at 2.5 bar (rail pressure) injectors are measured at 3 bar


i played with this setting for months when i had my tec2 .. and still was never happy

Last edited by Jaxx; 12-16-2008 at 10:54 AM.
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Old 12-16-2008, 11:23 AM   #22
mpaone
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Lightbulb

+1 to what Jaxx said.

I really don't know what I'm doing but it is pretty evident that it is not setup correctly if I leave it a 0 (no change). It runs like crap.

My Tuner had it at +2 and it was still a little rough so I decided to get mine flow tested and hence this thread.

BUT, there are other settings in the PFC that coorelate with the %, latency so you should have someone really set everything up correctly.

-Mike.
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Old 12-16-2008, 02:12 PM   #23
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Quote:
Originally Posted by Jaxx View Post
marnix its not fuel flow its the time that it takes the injector to cycle open/closed
he also had them both tested because he was adjusting via a percentage.. the actual numbers aren't as important as the percent


colchon
first you didn't have 380s you had 440s
second yes you should change you settings or have it changed by some on who knows what they are doing

the 380 number is at 2.5 bar (rail pressure) injectors are measured at 3 bar


i played with this setting for months when i had my tec2 .. and still was never happy
no i don`t have de 440cc those are the yellow top ones, mine are grey ones i think this are 380

so do i take the aproche if it is not broken I don,t fixe it??? jejej
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Old 12-17-2008, 11:49 AM   #24
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Grey's are 440s
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Old 12-17-2008, 12:31 PM   #25
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^^^^ what he said. Grey's are 440cc.
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