High S.Trim - Lower than -10%

[arnoldod]

Hi EFICU,

I switched to Bar from "/PSI because the indicator was showing negative value when I used "/PSI.


This is really weird. I have Flash Pro Manager installed in my desktop and laptop. Both showing the same negative value when I use "/psi.

[arnoldod]

I also think a good idea may be to put the ECU back to stock, and recheck. If it was something in the tune, that would tell you. But I am pretty sure it's the setting I mentioned in the above post.

I finally find the answer & happy to say that I’m happy I’m wrong in interpreting boost pressure.

since this is absolute pressure on the intake, 1.5bar is 0.5bar above 1bar (atmospheric pressure) and is perfectly normal for 2000rpm. Always subtract 1 from your MAP sensor input to find the turbo pressure.

I will run longer datalog tomorrow. Hopefully, traffic would be friendlier than last week.

I’ll get back to you with the datalog.

[EFICU]

Sounds good. Always nice when you can eliminate a fear, especially like overboost like you were.

Look forward to seeing how it looks.

[arnoldod]

Sounds good. Always nice when you can eliminate a fear, especially like overboost like you were.

Look forward to seeing how it looks.

Hi EFICU,

Thank you for encouraging me to keep on looking for information. As a regular non-tuner guy, I do need to seek as much information as I could. :)

I managed to take calibration with AFM adjustment from you this morning. I made slight change on the torque limit but I think the change in the torque limit shouldn't affect the S.Trim.

Attached is the datalog and calibration.

[EFICU]

Yeah that one looked a lot better, and the boost isn't spiking at all that I can see. So I made some changes to the MAF scaling to try and dial things in a little better.

I made two revisions for you, one with our normal settings and the MAF scaling adjustments. The second file is with the "MAP to determine WOT" function turned on. Another member I helped on here said he felt a big difference in performance and part throttle driving with it turned on, and the fueling looked a lot better with it on as well. You might give that one a try so we can see what you think. it doesn't add boost or anything, just changes the strategy to when the ECU delivers WOT fueling.

Let me know what you think.

EFICU.REV02Arnoldod.Current-Plus-3PSI-Calibration-R1_11a.fpcal

EFICU.REV02Arnoldod.Current-Plus-3PSI-Calibration-R1_11a (MAP to determine WOT).fpcal

[arnoldod]

Hi EFICU,

Thanks for the help!

Yes, the adjusted torque setting feels more refine and power curve seems more flat, which is nice!

I will try the regular calibration this week and get back to you on Thursday.

Unfortunately, I will not be able to drive to office tomorrow due to license plate base traffic restriction (odd/even) tomorrow. I will start using the updated calibration when I drive home from office today.

[arnoldod]

Managed to run the adjusted calibration on my way home from the office. Unfortunately, I encountered traffic. Thus, no WOT run.

STFT seems to be better but knock count raised to 11 count in about 40 minutes run. Knock control was 58% max.

[EFICU]

it's getting better, the MAF scaling is + or - 2% throughout 90% of the voltages. Just a couple are still a ways off. Did you use the MAP to determine WOT file or the standard file?

Also, the knock seemed to creep up when your intake temps got to 118* F. I am curious because in these files they have no temp compensation for intake temps. Not sure why, I don't have enough experience with 10th gens to know. But if we pull some timing out in the hotter temps like you saw the knock, it should help in that area.

Let me know what you think.

[arnoldod]

it's getting better, the MAF scaling is + or - 2% throughout 90% of the voltages. Just a couple are still a ways off. Did you use the MAP to determine WOT file or the standard file?

Also, the knock seemed to creep up when your intake temps got to 118* F. I am curious because in these files they have no temp compensation for intake temps. Not sure why, I don't have enough experience with 10th gens to know. But if we pull some timing out in the hotter temps like you saw the knock, it should help in that area.

Let me know what you think.

I used the standard calibration but I'll try the calibration with MAP to determine WOT for tomorrow morning run.

There is only air temperature ignition compensation (MAP low & MAP high) in the FlashPro for the 10th gen.


I'm thinking of upgrading the rads or the intercooler to keep temps in check but I'm not too concern with the knock count at this point because knock control seems to be healthy.

[EFICU]

Okay sounds good. If you're not worried about the knock we can worry about that later. And yeah, I would think pulling a couple degrees of ignition in the higher temps of that air temp compensation table would help relieve some of that knock.

Yeah an intercooler might help some, I would do that over the radiator if you decide to do it. I feel like I saw it somewhere, but aren't you in a usually warm part of the world?

If you are going to try the MAP for WOT file, try the one below. I made the changes necessary from your dataog you posted earlier regarding the MAF scaling. So try this one below.

EFICU.REV03Arnoldod.Current-Plus-3PSI-Calibration-R1_11a (MAP to determine WOT).fpcal

[arnoldod]

Okay sounds good. If you're not worried about the knock we can worry about that later. And yeah, I would think pulling a couple degrees of ignition in the higher temps of that air temp compensation table would help relieve some of that knock.

Yeah an intercooler might help some, I would do that over the radiator if you decide to do it. I feel like I saw it somewhere, but aren't you in a usually warm part of the world?

If you are going to try the MAP for WOT file, try the one below. I made the changes necessary from your dataog you posted earlier regarding the MAF scaling. So try this one below.


EFICU.REV03Arnoldod.Current-Plus-3PSI-Calibration-R1_11a (MAP to determine WOT).fpcal

Yes, I'm in warm side of the world. Lowest ambient temp in my city is 77 F. Average temp about 90 F and could reach 97 F in the summer. I'm considering custom intercooler because known brand intercooler will cost me close to USD 2,000.

Thanks! I will flash the adjusted calibration for tomorrow's run. I'll pay a closer attention on the knock. I'll get back to you with datalog.

[EFICU]

Yeah some things aren't cheap for these cars. Which intercooler are you looking at, I see a lot of very good brands for $600-$800 USD.

https://prlmotorsports.com/2016hondaciv ... foEALw_wcB

https://www.full-race.com/store/honda-a ... uQEALw_wcB

Let me know how it goes. We're definitely creeping up on it, so that's good!

[arnoldod]

I was looking at PRL Motorsports intercooler but the pricing is ridiculously expensive. Intercooler only will cost me about $ 1,800. Complete set including the piping will cost me close to USD 3,000. Thus, I will need to go custom.

It's raining today and most of the driver drove slower than usual. I couldn't do spirited driving because traffic was pretty crowded though there was no traffic jam.

Overall, the 3rd iteration of our calibration with MAP to determine WOT option is nice.

• S.Trim much better. There is still deviation but I think still within tolerance.

• Knock control is also within specs with maximum knock control of 58%

• Knock count starts to occur when IAT goes beyond 90F. It seems that upgrading intercooler is necessary. Alternatively, I might need to tone down low RPM torque limit slightly to keep the temps in check.

[EFICU]

Yeah the MAF scaling trims looked great on this one. Where it has the deep dips in fuel trim might be a transition fueling scenario as you're coming to a stop it looks like. But other than that, the trims are within a couple percent, which is great. The MAP for WOT seems to be a big help for these cars. Like I said, the other guy on here I helped he said it changes the characteristics of the car and it makes the fueling a lot more consistent.

I will look into the IAT retard for ignition and see if it applies to your car. If so, I would pull a couple of degrees in that table which would probably remove a lot of the high temp knock that you see. But with these new ignition tables from Honda, I don't know them as well as older model Honda stuff.

Here is the newest version if you want to try it. I made changes around those dips in fuel trims, I didn't touch anything else. If they don't get better on this file, it has to be something regarding fuel transition on coming to a stop. Which I am not sure we can get rid of without a lot of work, if at all.

EFICU.REV04Arnoldod.Current-Plus-3PSI-Calibration-R1_11a (MAP to determine WOT).fpcal

[arnoldod]

Yeah the MAF scaling trims looked great on this one. Where it has the deep dips in fuel trim might be a transition fueling scenario as you're coming to a stop it looks like. But other than that, the trims are within a couple percent, which is great. The MAP for WOT seems to be a big help for these cars. Like I said, the other guy on here I helped he said it changes the characteristics of the car and it makes the fueling a lot more consistent.

I will look into the IAT retard for ignition and see if it applies to your car. If so, I would pull a couple of degrees in that table which would probably remove a lot of the high temp knock that you see. But with these new ignition tables from Honda, I don't know them as well as older model Honda stuff.

Here is the newest version if you want to try it. I made changes around those dips in fuel trims, I didn't touch anything else. If they don't get better on this file, it has to be something regarding fuel transition on coming to a stop. Which I am not sure we can get rid of without a lot of work, if at all.


EFICU.REV04Arnoldod.Current-Plus-3PSI-Calibration-R1_11a (MAP to determine WOT).fpcal

I also noticed that the dip is mostly occur during fueling transition scenario as the car coming to a stop. Other than that the trim is great!

MAP for WOT definitely a big help for Civic X. I also notice fueling a lot more consistent.

There is IAT Ignition compensation under Ignition. Appreciate if you would help on the ignition compensation area as well.

I'll flash the updated calibration and get back to you with datalog later today. Thanks!