From Hero to Zhiro (1999 Sixbolt_16g)

[Justin DuBois]

To check your base timing, Warm up the engine and use the checkmark in ECM Link to force the ECU to hold 5 deg.

Use the timing light pointed at the crank pulley, and adjust the CAS until the mark indicates 5 deg BTDC.

 

[SixBolt_16G]

Changes to map:
View attachment 765084

Going to try to take a run mid morning if I dont get stuck in meetings. Timing light came in today.

Got out for a quick run but didnt have time to do the timing check, so will try to get that done this evening or tomorrow morning.

 

[SixBolt_16G]

Odd tho, I guess im going to have to do this run again:

Here is what I have in my Speed density table while sitting in the car.

Heres what comes up when I look at the logs that came out for today even tho i checked and double checked that i saved before i left. 3000 column is shown to not be updated.

Thats why the 3000 WBFactor is still off.

 

[Justin DuBois]

Got out for a quick run but didnt have time to do the timing check, so will try to get that done this evening or tomorrow morning.

Check your upload - the SD table and Global fuel are partially same as previous post. Based on the pull provided, Leave the 3000 column at 90 (don't punch 92) and do update global fuel to -49.2 and the 3500 collum to 83.

 

[SixBolt_16G]

Check your upload - the SD table and Global fuel are partially same as previous post. Based on the pull provided, Leave the 3000 column at 90 (don't punch 92) and do update global fuel to -49.2 and the 3500 collum to 83.

New log with 2 pulls in it.

Updated table:

Updated fuel

Timing hovers around the 5 degree mark.

 

[Justin DuBois]

New log with 2 pulls in it.

Updated table:

View attachment 765210

Updated fuel
View attachment 765211

Timing hovers around the 5 degree mark.
View attachment 765217

CAS position looks good. Its hard to get the camera and eyeballs lined up so that you are looking at the marks in a line crossing through the center of the pulley. Just by the camera shot it looks like 4 deg, but you would know best what you were seeing at the right viewing angle.

That worked pretty well. I think the Global Fuel is where it needs to be, and you can do tweaks to the SD VE table to improve the alignment between Linear WB and AFRatioEst.

I'll direct your attention to the highlighted cells at 6K RPM. We would like to increase the fuel here - and we are right on the edge of 100. Since the surrounding cells are also used - the 96.5 cell can go to 98.5 like its neighbors, and the one above it can go to 95.

Adjusting for alignment is a little tricky at 3500 RPM and 4000 RPM. The spot we would like to adjust is at 3750 rpm. There is a lean bump here, but it is bookended by 3500 and 4000 and those points on the curve are pretty good as is. You might try 0.5 richer at 3500 and 4000 - otherwise let it ride and see what happens when tuning lower and higher boost.

The other thing I want you to do is extend the RPM range - drive slower to start, and try to capture a WOT ramp starting at 1900rpm. Also - its time to stretch out to 7000-7250 at the top end.

 

[SixBolt_16G]

1900-7200 run this morning

Updated Map:

So timing....

I double checked when I got back from my run and I realized that I messed up. I did not ground the timing, thats what I meant in the last update by it was hovering... it was more like "dancing" around 5.

When I grounded it, it looks like it is all the way at the top T.

 

[SixBolt_16G]

Okay, disregard the message about timing above, i grounded in ECMLink and twisted the CAS to the right and now sure that I am sitting at 5 degrees.

 

[Justin DuBois]

Looks pretty good. Why don't you try your hand at making some tweaks at this boost level. 6k, and 6.5K look good 2K needs A big chunk more fuel, 2.5K, 4k, 4.5k, 5k, could use a little more fuel, 7K could use a little bit less fuel.

Now that the Global fuel is set, you can dial in your closed loop idle, and fuel trims with deadtime adjustment. After you get the engine up to temp and idling with the cooling fans coming on and off (190-205 deg f) Look at your Combined FT. In real time, you can tweak your global injector dead time until your Combined FT is hovering around +/- 0%. Once you see this, you can use the ECU menu to "Reset fuel trims..."

Once reset - go for a decent drive 10-15min, Cruse in various gears holding the RPM's consistent at various speeds. Try to get a varity of closed loop driving conditions. This will give you a log where you can use the "SD VE adjust CombinedFT" function to get your off boost parts of the map updated. You can include this as part of your non WOT data gathering with each new WOT attempt. They don't have to be seperate logs. Keep in mind to repeat this again if you need to tweak Global Dead times further.

 

[Justin DuBois]

This is for you -> Turn this on.

 

[SixBolt_16G]

Looks pretty good. Why don't you try your hand at making some tweaks at this boost level. 6k, and 6.5K look good 2K needs A big chunk more fuel, 2.5K, 4k, 4.5k, 5k, could use a little more fuel, 7K could use a little bit less fuel.

Here is what I have going so far.

Im a bit confused for the 2000 column. If i do an average from using the 100 over/under (1894-2599), I come up with being lean about 16%.

If 2000 comes in around these 2 cells, that would be 96 all the way down the column? Seems like an odd value to try to smooth the numbers around in that spot.

2nd question, is there a better way to pinpoint the rpms on the graph? This is what the calculations that i averaged across because i couldnt get a precise as i wanted.

RPM/Average %
2000:
1894-2599 15.9%
2500:
2398-3086 -2.6%
3000:
2905-3589 -0.9%
3500:
3409-4089 2.3%
4000:
3922-4607 5.9%
4500:
4409-5109 3.6%
5000:
4915-5597 1.3%
5500:
5419-6107 0.5%
7000:
6893-7455 -2.3%

 

[Justin DuBois]

Here is what I have going so far.View attachment 765392

Im a bit confused for the 2000 column. If i do an average from using the 100 over/under (1894-2599), I come up with being lean about 16%.

If 2000 comes in around these 2 cells, that would be 96 all the way down the column? Seems like an odd value to try to smooth the numbers around in that spot.
View attachment 765394

2nd question, is there a better way to pinpoint the rpms on the graph? This is what the calculations that i averaged across because i couldnt get a precise as i wanted.

RPM/Average %
2000:
1894-2599 15.9%
2500:
2398-3086 -2.6%
3000:
2905-3589 -0.9%
3500:
3409-4089 2.3%
4000:
3922-4607 5.9%
4500:
4409-5109 3.6%
5000:
4915-5597 1.3%
5500:
5419-6107 0.5%
7000:
6893-7455 -2.3%

Good! - I agree 16% is a lot for that spot -I would only punch in "5%" more in the 2000's column and not all the way down - just around that spot. Those cells are likely going to be changed when the closed loop data is altered with the "SD VE adjust CombinedFT" function is applied. You won't normally be WOT at 2000 rpm in third.

 

[SixBolt_16G]

Car had a very odd idle when i started it up this time, but after I enabled the setting for non 95-96 CAS, that seems to have fixed it. Adjusted my dead time a little bit and have a very. bouncy but close to 0 +-5 combined fuel trim by then end of the log. When I start it up again, i will hit reset fuel trims before I take it for a drive.

 

[Justin DuBois]

Car had a very odd idle when i started it up this time, but after I enabled the setting for non 95-96 CAS, that seems to have fixed it. Adjusted my dead time a little bit and have a very. bouncy but close to 0 +-5 combined fuel trim by then end of the log. When I start it up again, i will hit reset fuel trims before I take it for a drive.
View attachment 765400

Yes, that checkbox sets the injector sequence back to what is should be. You were shooting fuel at the back of closed valves before. Idle should be smoother now. Keep it going.

 

[Justin DuBois]

RPM/Average %
2000:
1894-2599 15.9%
2500:
2398-3086 -2.6%
3000:
2905-3589 -0.9%
3500:
3409-4089 2.3%
4000:
3922-4607 5.9%
4500:
4409-5109 3.6%
5000:
4915-5597 1.3%
5500:
5419-6107 0.5%
7000:
6893-7455 -2.3%

Regards finding the WB factor around "2000 rpm" etc..
I would only grab a 200 rpm wide selection of data to average. IE for 2000, select from 1900 to 2100, and then display the average.

 

[SixBolt_16G]

Regards finding the WB factor around "2000 rpm" etc..
I would only grab a 200 rpm wide selection of data to average. IE for 2000, select from 1900 to 2100, and then display the average.

Revised SD map using 100 under/over.

Have to go stand in line at the DMV in the morning so I can get my antique plates before they send me an emissions test notice. Should be able to reset fuel trims and then take the cruise tune after.

 

[SixBolt_16G]

Now that the Global fuel is set, you can dial in your closed loop idle, and fuel trims with deadtime adjustment. After you get the engine up to temp and idling with the cooling fans coming on and off (190-205 deg f) Look at your Combined FT. In real time, you can tweak your global injector dead time until your Combined FT is hovering around +/- 0%. Once you see this, you can use the ECU menu to "Reset fuel trims..."

Once reset - go for a decent drive 10-15min, Cruse in various gears holding the RPM's consistent at various speeds. Try to get a varity of closed loop driving conditions. This will give you a log where you can use the "SD VE adjust CombinedFT" function to get your off boost parts of the map updated. You can include this as part of your non WOT data gathering with each new WOT attempt. They don't have to be seperate logs. Keep in mind to repeat this again if you need to tweak Global Dead times further.

DMV took longer than expected, but fuel trims were reset once the car was warmed up and took it for the cruise tune.

 

[cswindel]

Brother your car is immaculate! And that prelude too, I love that gen body! Especially cool gauge cluster you got, very nice piece. I may need a new one if my tach doesn't produce a good read out

 

[SixBolt_16G]

Brother your car is immaculate! And that prelude too, I love that gen body! Especially cool gauge cluster you got, very nice piece. I may need a new one if my tach doesn't produce a good read out

Thanks! The dash is nice when it works but its been very temperental thus far and hasnt worked at all since i got the car back from the shop. Not sure if they left something disconnected when they installed the wideband or sometihng burned out. Also going to repaint the hood and roof soon since they left it baking in the sun. This single stage black paint doesnt fair well in the elements.

 

[Justin DuBois]

As I suspected - The automatic correction is adding more fuel - here I smoothed out the edges on a new SD map. I was hoping you had a 3rd gear pull in here too to verify the last VE changes.

Table attached.

 

[SixBolt_16G]

As I suspected - The automatic correction is adding more fuel - here I smoothed out the edges on a new SD map. I was hoping you had a 3rd gear pull in here too to verify the last VE changes.
View attachment 765676
Table attached.

Thanks... Unfortunately, my WOTs are done on very long 1 lane onramps to the highways and it was jammed pack with people leaving town, that why was hard getting up to 5th gear most of the time.... The cruise was actually driving around checking 3 different highways after I coudnt get on the first one. Ill do a pull on my drive in the morning

 

[SixBolt_16G]

As I suspected - The automatic correction is adding more fuel - here I smoothed out the edges on a new SD map. I was hoping you had a 3rd gear pull in here too to verify the last VE changes.
View attachment 765676
Table attached.

New Table loaded. Cruise with 3rd gear pull

 

[Justin DuBois]

Good Good - Keep going. The off boost area is going in the right direction - run and smooth out another set of edits using "SD VE adjust CombinedFT" - and then make some more moves in the WOT areas. See the highlighted lean spot at the 3500 rpm dip in the VE curve. Make a couple other tweaks and go again. You can go for a minimum boost run, or you can start increasing boost and see what that does. If you don't have knock, you can add more boost. It should be feeling pretty smooth and consistent.

 

[SixBolt_16G]

Good Good - Keep going. The off boost area is going in the right direction - run and smooth out another set of edits using "SD VE adjust CombinedFT" - and then make some more moves in the WOT areas. See the highlighted lean spot at the 3500 rpm dip in the VE curve. Make a couple other tweaks and go again. You can go for a minimum boost run, or you can start increasing boost and see what that does. If you don't have knock, you can add more boost. It should be feeling pretty smooth and consistent.

View attachment 765690

View attachment 765691

Can i do this?
Make a selection that gets rid of all of the idling I was doing in the garage and at the gas station and focus on the driving part?

and then my new map would look like this after running the tool and smoothing it out?

 

[Justin DuBois]

Can i do this?
Make a selection that gets rid of all of the idling I was doing in the garage and at the gas station and focus on the driving part?

View attachment 765723

and then my new map would look like this after running the tool and smoothing it out?

View attachment 765724
View attachment 765726

Yeah - that works. You can choose the dataset you want. Run it - prove it.