Ok, this is a third gear pull using the new SMART data-logging function. I have converted to a graph and the A/F %'s are now the correct corresponding ratio's. I also have the knock activity on there. This is a roughly 12 psi pull, the boost table is zero'd out and it is just working off of the wastgate actuator, I figured that I wouyld get the A/F's sorted before raising the boost. The only concern I have is the sudden rise from 6800-6900 RPM's in the knock activity, it goes from 31% to 46% and stays there, It does not look like a single knock event, but is it continuous knock activity? I also may need to go a bit richer.......Thanks for the feedback... Joey

 

Its lookin pretty good joey. The final knock noise looks more like engine noise, than actual knock. For instance, look at what one of my knock charts looked like. The knock events are stick out like sore thumbs. However, the rise at the end of the run is normal.

As for your graph, you would expect that if the end section really was a knock event, you would see a huge drop in the RPM graph. Start working up with the boost.

 

here's some obvoius knock.. this is very useful for tuning

 

Looks good so far joey. Are you logging with Commslog? Or Xmap?

shiv

 

Do I need to do any tweaking on the A/F's either up or down? And now should I start to work on the timing, or should I start to raise boost? If I should work on timing, do I need to set timing for 12 psi load cells, and then say at 17 psi, etc, or should the SMART pretty well take care of it after the baseline? And do I keep increasing timing until I see knock activity, or how do I know when to stop? I just do not know how to preceed from here, Dustin said that the vertical row for say 6000 RPM will pretty well be a certain value for Open Loop operation and 6500 will be a pretty consistent value, like 35% to 100% may all be -3.4% or whatever. I guess I am asking if for say 6000 RPM 35% will be -3.4, 40% maybe -3.6, 45% maybe -2.9, 50 % maybe -3.1 ect? They will for the most part all be changed in unision as a row? Sorry about all of the questions, just want to learn the slow steady way, not the go BOOM way....

I am using the Xmap normal speed logging, the high speed logging gives me an error message saying that Comm 1 is unavailable. I guess the high speed would give me more data points, but I think the low speed is working ok.....

 

Well I went and re-calibrated the wideband to make sure that I was coasting down the first time I did it, and I think my first calibration was off. On the first run above my fuel table was zero'd out, here is another log and a picture of the fuel table now. I am having to add a pretty good amount of fuel to get the A/F's down, and this is at 12 psi. It is a 2.3 now, but it still seems like I am adding a lot of fuel. Some questions....

1.Am I fighting the SMART software right now?
2. Is it trying to correct my inputs? anyway, please look at it and see what you think.
3. It goes a bit lean around 4800 RPM, but 4500 and 5000 look good, there is no in between so do I just leave it?
4. And I think that it is still a bit lean overall. The first part of the graph is part throttle and at log entry # 8 I go WOT and hit 12psi around 2500 RPM. Does it need to go richer faster?
5. When logging sometimes it will pick up 50 points, then other times maybe 25-30, any reason for this? Obviously the more the better...

Thanks for the input and sorry about all of the questions.

 

Here is a graph....

 

This is the fuel map Shiv did in March for the 2.0 engine. As you can see, I am having to add a lot of fuel once you take in to account that the old map was negative %'s and the new map positive %'s. Nearly 17% more fuel up top, and I am still in the 11.4-11.7 range in places, I would like to be around 11.3-11.4 across the board to be safe.

 

i had to do a triple take on your map...i can't believe the extra amount of fuel required.

 

Yea, I know, and I am still going up in places..........

I am really worried that I am fighting the SMART system, like it is trying to correct the changes that I am making.

But I am learning!

 

To disable the SMART fuel table, simply put -100 in all the cells in the Fuel Threshold table. This way, it will not interfere with your tuning. Only after you are done dialing in the MAF/fuel table should you reset it back to the way it was before.

As for tuning from here on. Simply raise the boost a bit at a time, while making sure your AFR is in-line. Shoot for low 11s on pump gas and you'll be fine. After you are done, reset your threshold table back to normal and let it do realtime corrections for you as conditions change.

Shiv

 

Do I need to mess with the timing or will the SMART keep it at the optimal level? I will put 41% and up to 100% and see what happens.

Thanks for looking though.

 

Is commslog available somewhere? and is there a fix for the highspeed logging in xmap 3.2 not being able to open the com port?

 

I haven't found the conversion factor from the LC-1 0-5v signal to actual A:F. Can somebody post it.

thanks

d

 

Insert a blank colum and go to the first cell, then type in this +(click on the first A/F box which will be in % form+100)/10 and it will convert to A/F ratio. Then click on that box and hit copy. Now you will go to the blank box under it and highlight dowm to the last box where you want the A/F's and hit paste. It will now fill in and interpolate to A/F's all of the way down.