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FIC 1100's Experience?

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Old Apr 12, 2010 | 12:43 PM
  #46  
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Originally Posted by mrfred
Not sure what your numbers here represent. Are the XXX/XXX values the STFT range? What are the 1.68 x and 1.62 x? Is that multiplication times the baseline latency values, or is it ms?
Sorry that wasn't more clear, I was assuming that readers looked at my spreadsheet.

The first values are the LTFTL / LTFTM after driving and settling. The multiplied values are applied to the expected values I received on the latency sheet from FIC (IE 1.68 x FIC_expected).
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Old Apr 12, 2010 | 02:33 PM
  #47  
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Originally Posted by fostytou
I am -12.5/-1.953125 at 1.68 x provided, but 6.25/-11.328125 at 1.62 x provided... so I'm splitting the difference (yes, I realize that one is ~10.5 delta and one is ~16.5 delta).
One thing I was thinking is that since it has warmed up a a bit maybe my fan is throwing things off. I don't have a heat shield yet, but I haven't used the AC at all. I'm getting close, but I'll let you guys know where things shake out.
That's a pretty huge difference in fuel trims for what appears to be only a ~0.06 ms difference in latency at 14V. I think something is definitely mucking up your fuel trim measurements.
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Old Apr 12, 2010 | 04:16 PM
  #48  
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Hey guys, I found a scaling of 914 is close.....

My trims are:

Idle= -1.75
Cruise = +5.438

I'll have some more info after a couple days of cruising.....btw, these idle great!

My latency is as follows (again, these are NOT dialed in yet, but have excellent driveability and hit target a/f perfectly)

Code:
4.69     5.904
7.04     4.872
9.38     2.880
11.73    1.968
14.08    1.488
16.42    1.176
18.77    1.056
I have a drop in K&N filter...

Try these guys and see how they work for you, but they might need some tweaking....They are perfectly safe for my car. My target A/F at load 205 and 7300 rpm is 9.9 and my WB02 hits exactly 9.9 !!

Last edited by tsitalon1; Apr 12, 2010 at 06:43 PM.
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Old Apr 13, 2010 | 05:24 AM
  #49  
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I think I'm done guys,

Using the above latency figures with a scaling of 914 I have put over 100 miles of cruising and idle with and without A/C. I've spent over 3 hours tweaking and my trims are as follows.

Idle = -2.3
Cruise= +1.95

EDIT- I cannot get pic to post correctly so, link here:
http://sites.google.com/site/tsitalo...attredirects=0

As I stated above I am hitting my exact target A/F as verified by my WB02. Time to lean her out now as 9.9 at 7k is killing me

Let me know if these work for you guys...

PLease remember my only intake modification is a dropin K&N filter..adjust for your intake.

Last edited by tsitalon1; Apr 13, 2010 at 08:14 AM.
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Old Apr 13, 2010 | 05:43 AM
  #50  
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thanks for the update and info.
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Old Apr 13, 2010 | 07:37 AM
  #51  
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Originally Posted by mrfred
That's a pretty huge difference in fuel trims for what appears to be only a ~0.06 ms difference in latency at 14V. I think something is definitely mucking up your fuel trim measurements.
I'm guessing that on my hour drive there wasn't enough idle time to accurately get the lower latency run moving in the right direction.....

Originally Posted by tsitalon1
I think I'm done guys,

Using the above latency figures with a scaling of 914 I have put over 100 miles of cruising and idle with and without A/C. I've spent over 3 hours tweaking and my trims are as follows.


EDIT- I cannot get pic to post correctly so, link here:
http://sites.google.com/site/tsitalo...attredirects=0

As I stated above I am hitting my exact target A/F as verified by my WB02. Time to lean her out now as 9.9 at 7k is killing me

Let me know if these work for you guys...

PLease remember my only intake modification is a dropin K&N filter..adjust for your intake.
You are at ~1.53 x my expected FIC given values. I just made it to 1.55 x expected!

Would you mind posting the expected latencies that were printed on your sheet?
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Old Apr 13, 2010 | 08:03 AM
  #52  
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I can but what's the point?

Find a happy place and stay there
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Old Apr 13, 2010 | 08:07 AM
  #53  
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These settings seem to be working well for me on 93 on my IX.....avg. mid and low trim is 3 on each - they fluctuate some and do what trims are meant to do but always seem to be under +/- 5% so I am leaving them alone at this point.

Scaling:

975

Latency:

5.352
3.36
1.992
1.392
1.032
0.84
0.72

I am switching back to E85 today......
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Old Apr 13, 2010 | 08:12 AM
  #54  
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Originally Posted by travman
These settings seem to be working well for me on 93 on my IX.....avg. mid and low trim is 3 on each - they fluctuate some and do what trims are meant to do but always seem to be under +/- 5% so I am leaving them alone at this point.

Scaling:

975

Latency:

5.352
3.36
1.992
1.392
1.032
0.84
0.72

I am switching back to E85 today......

Intresting, I guess there is more than one way to skin a cat...I wonder which combo is best... Any Pro's wanna chime in?

Both Travman and I have found decent trims with vastly different scaling/latency on 93 octane...
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Old Apr 13, 2010 | 08:24 AM
  #55  
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Originally Posted by tsitalon1
Intresting, I guess there is more than one way to skin a cat...I wonder which combo is best... Any Pro's wanna chime in?

Both Travman and I have found decent trims with vastly different scaling/latency on 93 octane...
different cars, different mods, etc etc......
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Old Apr 13, 2010 | 09:19 AM
  #56  
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Originally Posted by travman
different cars, different mods, etc etc......
Especially the "different cars" thing. More than likely the scaling we are using for one or both ROMs to display the injector latency values in ms is not quite right.
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Old Apr 13, 2010 | 09:25 AM
  #57  
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Cool,

So my experience and understanding is to just get the trims as close to zero as possible and then everything else is fine, regardless of the scaling/latency numbers, right?

I gotta lean this thing out I'm at 9.9 A/F, but on a good note I am at 52% IDC versus the 105% I was before

Last edited by tsitalon1; Apr 13, 2010 at 09:27 AM.
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Old Apr 13, 2010 | 11:56 AM
  #58  
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Originally Posted by tsitalon1
I can but what's the point?

Find a happy place and stay there
I am not quite clear if the latencies being sent with each set are different (like the IDs), but it would be nice for new users to be able to just muliply by x for slight differences in production (if they are reported as different).

Originally Posted by mrfred
Especially the "different cars" thing. More than likely the scaling we are using for one or both ROMs to display the injector latency values in ms is not quite right.
+1. One of the first things I looked at, but they are basically the same. I wasn't sure if someone had actually determined a new calculation that happened to be the same or just copied the same scaling.

Originally Posted by tsitalon1
Cool,

So my experience and understanding is to just get the trims as close to zero as possible and then everything else is fine, regardless of the scaling/latency numbers, right?

I gotta lean this thing out I'm at 9.9 A/F, but on a good note I am at 52% IDC versus the 105% I was before
Yup. Its an equation based system, so if the equations live together properly then you are all good.!
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Old Apr 13, 2010 | 12:06 PM
  #59  
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Originally Posted by fostytou
I am not quite clear if the latencies being sent with each set are different (like the IDs), but it would be nice for new users to be able to just muliply by x for slight differences in production (if they are reported as different).

I'll post them for you tonight..
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Old Apr 16, 2010 | 05:49 AM
  #60  
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Sorry I forgot to get those for you...Will try tonight.


On a related note. I might have to try Travman's settings as I seem to be overshooting my target A/F.

Example 7500rpm, load 200, target is 11.3, but actual is 10.5 and IDC is 53%.

So I will try increasing my scaling and adjusting latency from there...here we go again. I do gotta say that the car feel VERY smooth the way it is now though
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