Official Injector Scaling and Latency Values
#1
Official Injector Scaling and Latency Values
Just to try and get this all in one place.
Here's the ones I found. If you know of others, post up and I'll update this thread.
These values are a starting point. You should watch your fuel trims and if they are going out of what then adjust these values accordingly to make sure that your car is running correctly.
DeatschWerks 1000cc (drop in, two flavors appear to be out there, one short one long like stock)
Scaling
Pump: 713
E85: 562
Latency
6.120
4.200
2.808
1.992
1.488
1.200
0.912
DeatschWerks 800cc (drop in)
Scaling
Pump: 696
Latency
5.904
5.400
2.880
1.944
1.464
1.080
0.816
Alternate (Clipse3GT):
Scaling 770
5.736
5.232
2.496
2.016
1.368
1.008
0.624
RC 750cc (pigtail required)
RC 1000cc (pigtail required)
Injector Tuning Notes (Courtesy of Clipse3GT)
1. Choose a global setting (ECUFlash injector scaling number)
2. Log trims at idle and cruise
3. If trims are roughly the same, but positive, then you need to increase your global fueling, or in terms of ECUFlash, you need to lower your injector scaling number.
4. If both trims are roughly the same, but negative, then you need to descrease your global fueling, or in terms of ECUFlash, you need to raise your injector scaling number.
5. If idle trim is more positive than cruise trim, then you need to increase the dead time, or in terms of ECUFlash, you need to increase the latency value.
6. If the idle trim is less positive than the cruise trim, you need to decrease the deadtime, or in terms of ECUFlash, you need to decrease the latency value.
NOTE: After #5 or #6, you may need to readjust #1 accordingly.
NOTE 2: Basically, let's say that the IPW is 1ms at idle and 2ms at cruise. If you adjust the deadtime to add 100us (.1 ms), then you are affecting the idle fueling 10% and the cruise fueling 5%.
Here's the ones I found. If you know of others, post up and I'll update this thread.
These values are a starting point. You should watch your fuel trims and if they are going out of what then adjust these values accordingly to make sure that your car is running correctly.
DeatschWerks 1000cc (drop in, two flavors appear to be out there, one short one long like stock)
Scaling
Pump: 713
E85: 562
Latency
6.120
4.200
2.808
1.992
1.488
1.200
0.912
DeatschWerks 800cc (drop in)
Scaling
Pump: 696
Latency
5.904
5.400
2.880
1.944
1.464
1.080
0.816
Alternate (Clipse3GT):
Scaling 770
5.736
5.232
2.496
2.016
1.368
1.008
0.624
RC 750cc (pigtail required)
RC 1000cc (pigtail required)
Injector Tuning Notes (Courtesy of Clipse3GT)
1. Choose a global setting (ECUFlash injector scaling number)
2. Log trims at idle and cruise
3. If trims are roughly the same, but positive, then you need to increase your global fueling, or in terms of ECUFlash, you need to lower your injector scaling number.
4. If both trims are roughly the same, but negative, then you need to descrease your global fueling, or in terms of ECUFlash, you need to raise your injector scaling number.
5. If idle trim is more positive than cruise trim, then you need to increase the dead time, or in terms of ECUFlash, you need to increase the latency value.
6. If the idle trim is less positive than the cruise trim, you need to decrease the deadtime, or in terms of ECUFlash, you need to decrease the latency value.
NOTE: After #5 or #6, you may need to readjust #1 accordingly.
NOTE 2: Basically, let's say that the IPW is 1ms at idle and 2ms at cruise. If you adjust the deadtime to add 100us (.1 ms), then you are affecting the idle fueling 10% and the cruise fueling 5%.
Last edited by goofygrin; Nov 18, 2009 at 07:10 AM.
#3
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I would leave the scaling alone and adjust the latency to near 0% as possible. Whenever changing latency values, always reset the ECU by unplugging the ECU harness for about 10 seconds.
#5
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2. Log trims at idle and cruise
3. If trims are roughly the same, but positive, then you need to increase your global fueling, or in terms of ECUFlash, you need to lower your injector scaling number.
4. If both trims are roughly the same, but negative, then you need to descrease your global fueling, or in terms of ECUFlash, you need to raise your injector scaling number.
5. If idle trim is more positive than cruise trim, then you need to increase the dead time, or in terms of ECUFlash, you need to increase the latency value.
6. If the idle trim is less positive than the cruise trim, you need to decrease the deadtime, or in terms of ECUFlash, you need to decrease the latency value.
NOTE: After #5 or #6, you may need to readjust #1 accordingly.
NOTE 2: Basically, let's say that the IPW is 1ms at idle and 2ms at cruise. If you adjust the deadtime to add 100us (.1 ms), then you are affecting the idle fueling 10% and the cruise fueling 5%.
#7
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I am working through email tunes with MotionLab Tuning to get my modified stock 820cc injectors dialed in. I am now understanding how much of a pain it is to dial in new injectors. After adjusting values can you clear the ecu with the ecuflash reset dtc or is unplugging the battery neccesary?
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#8
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i used the 696 scaling and the car trims are not ok. the car is also smokes black (rich).
but i noticed that the trims are not cleared to zero by simply flashing the ecu. it seems i need to unplug the battery cable for a minute or so.
#11
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I'll report back with what I settle on. I'm re-adjusting my numbers after accounting for the leaner AMS Intake setup and using the MAF compensation code (+10% G/S) so that my injector scaling and latencies are more apples to apples and done properly. I figured if my AFR's are going to be a little off after disabling LTFT at WOT I may as well standardize this as well.
#13
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After I looked through various maps for 91 & 93 OCT, for various intakes and stages 1 & 2. The scaling always stays the same as well as latencies.
So these are the settings for all the maps, unless someone else can prove me otherwise.
SCALE: 750
************************************************** ************************************************** **************************************************
E85 FUEL
SCALE: 542
So these are the settings for all the maps, unless someone else can prove me otherwise.
SCALE: 750
************************************************** ************************************************** **************************************************
E85 FUEL
SCALE: 542
Last edited by Clipse3GT; Dec 2, 2009 at 06:21 PM.
#14
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Need some input here... I've been trying desperately to get my Deatschwerks 1000 cc's dialed in and the best I've been able to achieve is about +/- 1% Idle LTFT and +6-7% Cruise LTFT. I've already wasted a ton of time, and I'm wondering if anybody has some known-good scaling and latency values for the long-tip DW1000's.
Here are mine:
Scaling: 886
Latencies:
6.12
5.328
2.808
1.824
1.464
1.08
0.816
Like I said, it's close, but not nearly perfect enough for my liking.
Here are mine:
Scaling: 886
Latencies:
6.12
5.328
2.808
1.824
1.464
1.08
0.816
Like I said, it's close, but not nearly perfect enough for my liking.
#15
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Join Date: Oct 2009
Location: SL, UT
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Need some input here... I've been trying desperately to get my Deatschwerks 1000 cc's dialed in and the best I've been able to achieve is about +/- 1% Idle LTFT and +6-7% Cruise LTFT. I've already wasted a ton of time, and I'm wondering if anybody has some known-good scaling and latency values for the long-tip DW1000's.
Here are mine:
Scaling: 886
Latencies:
6.12
5.328
2.808
1.824
1.464
1.08
0.816
Like I said, it's close, but not nearly perfect enough for my liking.
Here are mine:
Scaling: 886
Latencies:
6.12
5.328
2.808
1.824
1.464
1.08
0.816
Like I said, it's close, but not nearly perfect enough for my liking.