Injector scaling and latecy for different injectors.
Oct 6, 2008, 02:01 PM
#573
Just thought I'd share my setup, this has worked pretty well on 2 cars now.
FIC 1050cc injectors (Fuel Injector Clinic). Mine came with a sheet showing them flowrated at 1072cc each, the second set went in an 03 and were shown at 1072, 1072, 1076, 1076.
I have been running these for a few months now with no problems other than a little sputter when 'warm starting' (i.e. car has sat for a few hours after running). As it's been getting cold here in MN, I've had zero cold-start issues and feel safe to publish these to the world.
I'll be converting to E85 in a few weeks, I'll post any updates if I make any changes.
FIC 1050cc injectors (Fuel Injector Clinic). Mine came with a sheet showing them flowrated at 1072cc each, the second set went in an 03 and were shown at 1072, 1072, 1076, 1076.
Code:
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
I'll be converting to E85 in a few weeks, I'll post any updates if I make any changes.
Last edited by scheides; Oct 6, 2008 at 02:05 PM.
Oct 9, 2008, 11:18 PM
#576
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I didnt feel like scrolling through all of the pages of this thread to see if this was posted, so forgive me if it is a repost. This company has tested the latency of all injectors on the market for us to see..Hope this helps.
Your scaling and latency "should" generally be dead on if your MAF is scaled correctly for the airflow.
http://injector-rehab.com/kbse/lag.htm
Your scaling and latency "should" generally be dead on if your MAF is scaled correctly for the airflow.
http://injector-rehab.com/kbse/lag.htm
Oct 10, 2008, 08:28 AM
#577
I didnt feel like scrolling through all of the pages of this thread to see if this was posted, so forgive me if it is a repost. This company has tested the latency of all injectors on the market for us to see..Hope this helps.
Your scaling and latency "should" generally be dead on if your MAF is scaled correctly for the airflow.
http://injector-rehab.com/kbse/lag.htm
Your scaling and latency "should" generally be dead on if your MAF is scaled correctly for the airflow.
http://injector-rehab.com/kbse/lag.htm
1) Injector driver system used to test the injectors: A peak & hold injector driver system will produce a much shorter latency than a saturated driver with a resistor in series (what the Evo uses).
2) Test pressure on injectors: An injector tested in air with no fuel (or surrogate) pressure on the injector inlet will have a much different latency response than one that is under pressure. The exact value of the pressure matters too.
Oct 11, 2008, 07:58 AM
#578
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RC750
-------
scaled to 650
latencies:
5.016
3.12
1.992
1.272
0.744
0.48
0.216
same trims as with the OEM injectors (low +8 , mid +3 . running with 15% E85)
fuel map unchanged and no change in AFR (with 636 scaling the AFR were globally .2 or .3 more rich.
-------
scaled to 650
latencies:
5.016
3.12
1.992
1.272
0.744
0.48
0.216
same trims as with the OEM injectors (low +8 , mid +3 . running with 15% E85)
fuel map unchanged and no change in AFR (with 636 scaling the AFR were globally .2 or .3 more rich.
Oct 13, 2008, 08:24 AM
#581
My idle has been acting funny since my turbo and injector install. I can usually get it to fall back to a normal idle coming to a stop now. Sometimes it still wants to stall if i'm too abrupt
Even though it stays steady my AFR's jump around it'll go full lean then try to correct and go a little rich then back to full lean. Eventually it'll stay in the 14's as it should.
880's
Scaled to 812
3.312
1.680
1.344
0.960
0.840
0.456
0.240
Even though it stays steady my AFR's jump around it'll go full lean then try to correct and go a little rich then back to full lean. Eventually it'll stay in the 14's as it should.
880's
Scaled to 812
3.312
1.680
1.344
0.960
0.840
0.456
0.240
Oct 13, 2008, 04:18 PM
#583
FIC 850cc injectors in my Evo IX GSR; professionally tuned:
Scaling = 696
Latencies =
3
2.376
1.2
0.768
0.504
0.36
0.312
My fuel trims are close, but not perfect. I may try adjusting them a bit before I get tuned next, I just don't want to do it now and screw up my tune.
Scaling = 696
Latencies =
3
2.376
1.2
0.768
0.504
0.36
0.312
My fuel trims are close, but not perfect. I may try adjusting them a bit before I get tuned next, I just don't want to do it now and screw up my tune.
Oct 14, 2008, 06:36 AM
#584
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Ill post my FIC 850's if i havent already in this thread... Not "professionally" tuned.... but i did it, and they are pretty damn spot on. Scaling is not at 696 for me though. I think 770. or 750.
