Injector scaling and latecy for different injectors.
Aug 18, 2008, 11:25 PM
#512
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I have my FIC 1050 injectors scaled at 1083.
4.69 = 4.512
7.03 = 3.456
9.38 = 1.896
11.72 = 1.368
14.06 = 0.984
16.41 = 0.720
18.68 = 0.528
Low is at 2.65, Mid varies from 0 to -5 depending on what RPM I cruise at, and High is 0. I'm playing with 9V since the car takes a few cranks to start. I believe it's supposed to be about 0.040 ms higher.
This is for a 2.3L engine. Going to have Bryan tune my car soon.
4.69 = 4.512
7.03 = 3.456
9.38 = 1.896
11.72 = 1.368
14.06 = 0.984
16.41 = 0.720
18.68 = 0.528
Low is at 2.65, Mid varies from 0 to -5 depending on what RPM I cruise at, and High is 0. I'm playing with 9V since the car takes a few cranks to start. I believe it's supposed to be about 0.040 ms higher.
This is for a 2.3L engine. Going to have Bryan tune my car soon.
Aug 21, 2008, 03:26 PM
#513
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I was reading some more and I came across some good info and stuff. But that info, throws my injector scale a curb ball. My ROM says:
Injector Size 1000cc (AMS, But I don't remember the company that makes them)
Injector scaling 886
The injector battery Voltage is as follows,
Battery voltage--ms
4.69= 3.312
7.03= 1.680
9.38= 1.152
11.72= 1.008
14.06= 0.888
16.41= 0.552
18.68= 0.240
Is there anything I should adjust? I think the numbers are off.
Injector Size 1000cc (AMS, But I don't remember the company that makes them)
Injector scaling 886
The injector battery Voltage is as follows,
Battery voltage--ms
4.69= 3.312
7.03= 1.680
9.38= 1.152
11.72= 1.008
14.06= 0.888
16.41= 0.552
18.68= 0.240
Is there anything I should adjust? I think the numbers are off.
Aug 23, 2008, 03:04 AM
#515
razorlab, im having problems scaling in my denso 720s. basically the car would almost stall after throttle let off, and starting from a set of lights, anything more than about 10% throttle causes it to go down to 10 mixtures. once im at about 3000rpm the car feels normal. all my problems are from 1000-3000rpm.
im using your 636 scaling and latencies. any ideas?
im using your 636 scaling and latencies. any ideas?
Aug 23, 2008, 04:10 AM
#516
George (i think :P)
What are your fuel trims? add these to EvoScan data.xml :
Drive on the FWY (constant tps) for 10 mins, then idle for 10 mins and report the trims after you have done this...
What are your fuel trims? add these to EvoScan data.xml :
Code:
<DataListItem DataLog="Y" Color="" Display="Fuel Trim Idle" LogReference="FuelTrim_Idle" RequestID="0C" Eval="(0.1961*x)-25" Unit="%" MetricEval="" MetricUnit="" ResponseBytes="1" GaugeMin="-255" GaugeMax="255" ChartMin="-255" ChartMax="255" ScalingFactor="1" Notes="" Priority="1" Visible="False" /> <DataListItem DataLog="Y" Color="" Display="Fuel Trim Cruise" LogReference="FuelTrim_Cruise" RequestID="0D" Eval="(0.1961*x)-25" MetricEval="" MetricUnit="" Unit="%" ResponseBytes="1" GaugeMin="-255" GaugeMax="255" ChartMin="-255" ChartMax="255" ScalingFactor="1" Notes="" Priority="1" Visible="False" />
Aug 23, 2008, 11:58 PM
#519
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Alright, I was just sitting around thinking (rare occasion) and for some strange reason I was thinking of fuel trims....and I came to this question. Is there a theoretical situation where if you would actually go over the correct latency in which you'll end up "chasing" your changes in latency with injector scaling to attempt to keep both your idle and cruise in the +/- 5 range?
For example (I believe this happened to me when I first started trying to dial in injectors) Your LTFTs are -5.5 at idle and maxed out a -12.5 in cruise.....you bump the latency up by say, .1 since your idle trim is more positive than your cruise.....now your trims are 3.8 at idle and still maxed at -12.5 cruise....
You could say "oh, my idle is more positive than my cruise" and bump latency again, but that would be pushing your cruise trims even further out of the range which is bad since they're already maxed....and say you're running 780cc injectors and you're already scaled at say, 720cc, you're already going pretty on your injector scaling and by bumping your latency again (and the many more times it seems you'll have to to get your trims in the same range) you'll probably end up having your scaling higher than that off the actually injector, and at the pace your raising your scaling.....considerably higher....
So back to original question is there a point where you should actually lower latency even when your idle trim is more positive than that of your cruise trim?
I mean if you you would've lower latency at the beginning, like when it was 3.8 and -12.5. I would've pulled your cruise trims down into closer to +/-5....and you're idle is already close to zero and not maxed or anything so it has some room to spare, right?
Sorry if this cant be understood....or is completely worthless and wrong, it's late....I'm off to bed =)
For example (I believe this happened to me when I first started trying to dial in injectors) Your LTFTs are -5.5 at idle and maxed out a -12.5 in cruise.....you bump the latency up by say, .1 since your idle trim is more positive than your cruise.....now your trims are 3.8 at idle and still maxed at -12.5 cruise....
You could say "oh, my idle is more positive than my cruise" and bump latency again, but that would be pushing your cruise trims even further out of the range which is bad since they're already maxed....and say you're running 780cc injectors and you're already scaled at say, 720cc, you're already going pretty on your injector scaling and by bumping your latency again (and the many more times it seems you'll have to to get your trims in the same range) you'll probably end up having your scaling higher than that off the actually injector, and at the pace your raising your scaling.....considerably higher....
So back to original question is there a point where you should actually lower latency even when your idle trim is more positive than that of your cruise trim?
I mean if you you would've lower latency at the beginning, like when it was 3.8 and -12.5. I would've pulled your cruise trims down into closer to +/-5....and you're idle is already close to zero and not maxed or anything so it has some room to spare, right?
Sorry if this cant be understood....or is completely worthless and wrong, it's late....I'm off to bed =)
Aug 24, 2008, 01:45 AM
#520
okay back with some logs from razorlabs settings for the denso 720s
at idle:
fuel trim low 100
fuel trim medium 99.2185
fuel trim high 98.4375
fuel trim idle -0.2914
fuel trim cruise -0.0953
at cruise:
fuel trim low 100
fuel trim medium 93.75
fuel trim high 98.4375
fuel trim idle -0.2914
fuel trim cruise -1.468
same trims as above for driving
once the car is on boost or above 3000rpm its fine
taking off from the lights is the biggest problem and also at idle
if the car is idling and i floor it, it clogs with fuels and goes pop pop pop pop
taking off from the lights if i floor it
i hit 100% rps at 1312rpm and im already at 11 afr. at 1000rpm its already at 12afr. at 3000rpm it starts leaning out to 12 and then to 12.3 so that the car starts moving.
any idea what is going on? im nearly getting rear ended by cars at each set of traffic lights because the car is bogging down so much. and getting overtaken by a prius isnt cool!
at idle:
fuel trim low 100
fuel trim medium 99.2185
fuel trim high 98.4375
fuel trim idle -0.2914
fuel trim cruise -0.0953
at cruise:
fuel trim low 100
fuel trim medium 93.75
fuel trim high 98.4375
fuel trim idle -0.2914
fuel trim cruise -1.468
same trims as above for driving
once the car is on boost or above 3000rpm its fine
taking off from the lights is the biggest problem and also at idle
if the car is idling and i floor it, it clogs with fuels and goes pop pop pop pop
taking off from the lights if i floor it
i hit 100% rps at 1312rpm and im already at 11 afr. at 1000rpm its already at 12afr. at 3000rpm it starts leaning out to 12 and then to 12.3 so that the car starts moving.
any idea what is going on? im nearly getting rear ended by cars at each set of traffic lights because the car is bogging down so much. and getting overtaken by a prius isnt cool!
Aug 24, 2008, 04:56 AM
#522
i idled it for ten minutes and then i logged for about 30 seconds
attached a few log
one idle log
one cruise log
one taking off from the lights and playing with the throttle to try and get out of the fuel blockage
and another one taking off from the lights and flooring it to show what happens
attached a few log
one idle log
one cruise log
one taking off from the lights and playing with the throttle to try and get out of the fuel blockage
and another one taking off from the lights and flooring it to show what happens
Aug 24, 2008, 04:39 PM
#524
Alright, I was just sitting around thinking (rare occasion) and for some strange reason I was thinking of fuel trims....and I came to this question. Is there a theoretical situation where if you would actually go over the correct latency in which you'll end up "chasing" your changes in latency with injector scaling to attempt to keep both your idle and cruise in the +/- 5 range?
For example (I believe this happened to me when I first started trying to dial in injectors) Your LTFTs are -5.5 at idle and maxed out a -12.5 in cruise.....you bump the latency up by say, .1 since your idle trim is more positive than your cruise.....now your trims are 3.8 at idle and still maxed at -12.5 cruise....
You could say "oh, my idle is more positive than my cruise" and bump latency again, but that would be pushing your cruise trims even further out of the range which is bad since they're already maxed....and say you're running 780cc injectors and you're already scaled at say, 720cc, you're already going pretty on your injector scaling and by bumping your latency again (and the many more times it seems you'll have to to get your trims in the same range) you'll probably end up having your scaling higher than that off the actually injector, and at the pace your raising your scaling.....considerably higher....
So back to original question is there a point where you should actually lower latency even when your idle trim is more positive than that of your cruise trim?
I mean if you you would've lower latency at the beginning, like when it was 3.8 and -12.5. I would've pulled your cruise trims down into closer to +/-5....and you're idle is already close to zero and not maxed or anything so it has some room to spare, right?
Sorry if this cant be understood....or is completely worthless and wrong, it's late....I'm off to bed =)
For example (I believe this happened to me when I first started trying to dial in injectors) Your LTFTs are -5.5 at idle and maxed out a -12.5 in cruise.....you bump the latency up by say, .1 since your idle trim is more positive than your cruise.....now your trims are 3.8 at idle and still maxed at -12.5 cruise....
You could say "oh, my idle is more positive than my cruise" and bump latency again, but that would be pushing your cruise trims even further out of the range which is bad since they're already maxed....and say you're running 780cc injectors and you're already scaled at say, 720cc, you're already going pretty on your injector scaling and by bumping your latency again (and the many more times it seems you'll have to to get your trims in the same range) you'll probably end up having your scaling higher than that off the actually injector, and at the pace your raising your scaling.....considerably higher....
So back to original question is there a point where you should actually lower latency even when your idle trim is more positive than that of your cruise trim?
I mean if you you would've lower latency at the beginning, like when it was 3.8 and -12.5. I would've pulled your cruise trims down into closer to +/-5....and you're idle is already close to zero and not maxed or anything so it has some room to spare, right?
Sorry if this cant be understood....or is completely worthless and wrong, it's late....I'm off to bed =)
The 11 volt controls cruise and the 14.7 controls idle for the most part. You could lower the value for the 11.7 only and get the cruise trim in line closer with the idle trim as an example.
