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Power FC Injector dynamics settings for power fc?

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Old Sep 24, 2013 | 01:28 PM
  #1  
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From: carstairs
Injector dynamics settings for power fc?

Does anyone know where I can find the settings for Injectors that goes into the power fc. I have 1000 primaries and 2000 secondaries ?
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Old Sep 24, 2013 | 03:54 PM
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It won't make *that* much of a difference though (from what I've been told) because the PFC isn't sophisticated enough to see down to this level. Still, these should be the base settings that are entered in to start the map from.


Oh, and if you're running your base fuel pressure at stock levels (35-38psi) just follow the downward trend for flow rate and set dead time, it'll work out and idle just fine.
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Old Sep 24, 2013 | 05:10 PM
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yea, you'll want to put in the lag timings for each voltage. Then you want the "gross" lag to be zeroed out.

The X's will be whatever your fuel map is set at. mine are at 90, but that was to get in the ballpark, and then the map was tuned around that.

So you'd have something like:

Front Primary_______X_______0.0
Front Secondary_____________0.0
Rear Primary _______X_______0.0
Rear Secondary_____________0.0

The Q's would be your injector size at whatever fuel pressure you run. I run 725 and 2000's, at 43.5psi base pressure, so:

Q Primary_____715
Q Secondary___2225

You'd obviously want to put in the 1015 for the primary, if you are running 43.5psi

On the transition, this will vary based on what works for your car. My car seems to like to transition at 30% and .900ms

Then, like i said, the tables to the right of that you pull directly from the charts fendamonkey posted. So if you are running 43.5 base fuel pressure, you'd input these values:


_________Primary_____Secondary
16v_______.805________.375
14v_______.990________.495
12v_______1.240_______.680
10v_______1.675_______.950
8v________2.600_______1.455
6v_____(interpolate)_____2.840

Last edited by socks; Sep 24, 2013 at 05:30 PM.
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Old Sep 25, 2013 | 11:36 AM
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From: carstairs
Okay thanks guys I'm gunna attempt it tonight. Wish me luck haha
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Old Sep 25, 2013 | 12:40 PM
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STICKY!

oh wait... this is rx7club
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Old Sep 26, 2013 | 08:39 PM
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Originally Posted by jamesbully
Okay thanks guys I'm gunna attempt it tonight. Wish me luck haha
You need a lot of luck because you could not even find the ID website and download the lag tables. Not much talent in your brain or your just plain lazy.
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Old Sep 27, 2013 | 08:04 PM
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From: carstairs
[QUOTE="sockstheninja;11581372"]yea, you'll want to put in the lag timings for each voltage. Then you want the "gross" lag to be zeroed out. The X's will be whatever your fuel map is set at. mine are at 90, but that was to get in the ballpark, and then the map was tuned around that. So you'd have something like: Front Primary_______X_______0.0 Front Secondary_____________0.0 Rear Primary _______X_______0.0 Rear Secondary_____________0.0 The Q's would be your injector size at whatever fuel pressure you run. I run 725 and 2000's, at 43.5psi base pressure, so: Q Primary_____715 Q Secondary___2225 You'd obviously want to put in the 1015 for the primary, if you are running 43.5psi On the transition, this will vary based on what works for your car. My car seems to like to transition at 30% and .900ms Then, like i said, the tables to the right of that you pull directly from the charts fendamonkey posted. So if you are running 43.5 base fuel pressure, you'd input these values: _________Primary_____Secondary 16v_______.805________.375 14v_______.990________.495 12v_______1.240_______.680 10v_______1.675_______.950 8v________2.600_______1.455 6v_____(interpolate)_____2.840[/QUOTE
Secondary won't go past 1500 for flow rate do you know if this is because I have an older power fc or what I'm not really sure ?
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Old Sep 27, 2013 | 08:14 PM
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you're using a commander? or a datalogit?
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Old Sep 27, 2013 | 08:15 PM
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you need a datalogit to enter the correct information as i posted above.
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Old Sep 27, 2013 | 08:20 PM
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From: carstairs
I'm using commander .
Originally Posted by sockstheninja
you're using a commander? or a datalogit?
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Old Sep 29, 2013 | 09:29 AM
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Originally Posted by sockstheninja
you need a datalogit to enter the correct information as i posted above.
this.

you could also borrow someones datalogit to do so.
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Old Sep 29, 2013 | 09:41 AM
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From: carstairs
Originally Posted by sockstheninja
this. you could also borrow someones datalogit to do so.
Yes I'm borrowing one today
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Old Sep 30, 2013 | 08:26 PM
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From: carstairs
Originally Posted by sockstheninja
yea, you'll want to put in the lag timings for each voltage. Then you want the "gross" lag to be zeroed out. The X's will be whatever your fuel map is set at. mine are at 90, but that was to get in the ballpark, and then the map was tuned around that. So you'd have something like: Front Primary_______X_______0.0 Front Secondary_____________0.0 Rear Primary _______X_______0.0 Rear Secondary_____________0.0 The Q's would be your injector size at whatever fuel pressure you run. I run 725 and 2000's, at 43.5psi base pressure, so: Q Primary_____715 Q Secondary___2225 You'd obviously want to put in the 1015 for the primary, if you are running 43.5psi On the transition, this will vary based on what works for your car. My car seems to like to transition at 30% and .900ms Then, like i said, the tables to the right of that you pull directly from the charts fendamonkey posted. So if you are running 43.5 base fuel pressure, you'd input these values: _________Primary_____Secondary 16v_______.805________.375 14v_______.990________.495 12v_______1.240_______.680 10v_______1.675_______.950 8v________2.600_______1.455 6v_____(interpolate)_____2.840
So I tried all of this and I tried other stuff and it didn't do a single thing it's running so rich that the car can't idle can't drive can't do anything spark plugs are fouled. Any suggestions ?
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Old Oct 1, 2013 | 08:53 PM
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you've got to tune the fuel map. if you have already, read further.

if your fuel map is otherwise set for your modifications, your front and rear X values (from my post above) should be the percentage of your stock injectors to your new injectors.

550/1000cc = .55
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Old Oct 1, 2013 | 09:11 PM
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From: carstairs
Originally Posted by sockstheninja
you've got to tune the fuel map. if you have already, read further. if your fuel map is otherwise set for your modifications, your front and rear X values (from my post above) should be the percentage of your stock injectors to your new injectors. 550/1000cc = .55
Yes I did all of this and still nothing running so rich that it's burning black smoke when normally driven
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Old Oct 2, 2013 | 07:05 PM
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Then either:
(1) fuel pressure is too high.
(2) leaking injectors.
(3) TPS voltages are way off.
(4) map sensor hose not connected to intake manifold.
(5) wrong scale/offset for map sensor.
(6) water and fuel temp sensor connectors switched.
(7) weak or bad ignition system.
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Old Aug 15, 2014 | 10:05 AM
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Great info!
But.. I can't understand what is the formula for the secondary injectors lag time.. Since I just don't copy the info there, right? Can you help me out in that? I have 4x 1000 ID injectors..
Thanks
George
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Old Aug 15, 2014 | 01:16 PM
  #18  
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From: carstairs
Someone else will have to answer that for Ya I switched to a microtech
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Old Aug 16, 2014 | 03:12 PM
  #19  
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OK thanks.
If anyone can, this is what I have done for my 4x1000 setup.
I have set my front and rear primary as 0.55, the Q primary and secondary as 1015 and the dead times for primary and secondary as 2.600, 1.675, 1.240, 0.990, 0.805
Anything else I need to change?
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Old Aug 16, 2014 | 07:02 PM
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Pri/Sec Trans to 30
Sec Tans MS to .1

Drink one shot each of Ouzo, Metaxa 7 Star, Retsina, and Mavrodafni while eating some feta along with bread and Kalamata olives.
Then relax.
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Old Aug 18, 2014 | 04:42 AM
  #21  
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thanks a lot for the reply mate!
Done all you said and i am more relaxed now
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Old Nov 28, 2015 | 12:31 PM
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just curious, when trying negative lag to have a nice idle and go away of the 11.x area -today i found out that my ID1000 primaries like it around -0.22 up to -0.28-, do i have to change the lag for the secondaries as well? ie +0.08 so that i wont have to make lots of changes in the base map?
thanks!

Last edited by Black7Conv; Nov 28, 2015 at 12:34 PM.
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Old Dec 2, 2015 | 11:18 PM
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Using negative lag results in leaning out the fuel. Only way to get around the stupid PFC minimum injector on time allowed for primary injectors and this prevents normal leaning of AFR.

Secondaries do not need it.
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Old Jan 10, 2016 | 06:41 PM
  #24  
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thanks a lot for the reply!
What's the lowest msec that PFC is letting us have? 1.2? 2?
Tried to lean out the idle area further and now i can have a reasonable idle AFR with -10 and -12 negalive lag but i believe i better change my 4x1000 injectors with a 725/2000 ID setup..
thanks again
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