ECMlink 2G SD tuning

[jmt2028]

Im at 42.6 and -300. But it feels like a slight studder now from when I step on the gas and see the response on the rpm

 

[Justin DuBois]

Im at 42.6 and -300. But it feels like a slight studder now from when I step on the gas and see the response on the rpm

That will improve with VE and timing adjustments. Right now, you need fuel calibration in the ballpark so you can start tuning.

The pull you want is 3rd gear from 2000rpm up to redline. If you start to get knock, or see the AFR on the WB above 12 - back out of it. - Run your lowest boost

 

[jmt2028]

You must be logged in to view this image or video.

Thank you so much for the help today, I am extremely grateful. For now I just need to drive home. I see small counts of knock what seem at random while Im cruising home but I can do any pulls because I know my boost is at like 30psi right now. I can definitely feel the difference in the responsiveness of the car though. I'll post my cruise log when I get home.

The pull you want is 3rd gear from 2000rpm up to redline. If you start to get knock, or see the AFR on the WB above 12 - back out of it. - Run your lowest boost

Whenever I go to do a pull, if I see knock, what is the best course of action to correct the knock?

 

[Justin DuBois]

Whenever I go to do a pull, if I see knock, what is the best course of action to correct the knock?

It depends on other factors. Knock is an indicator. You may have too much timing, boost or compression for the load factor. Reducing boost is the normal approach. The ECU will reduce timing to save itself because its the fastest way to prevent detonation.

Running on a low timing map is a temporary solution, and not going to give you much performance.

The torque curve is influenced by turbo spool. More spool (boost) = more torque. To take advantage of the torque, you need to convert torque to HP. Increasing the timing improves the mechanical advantage of the piston to push on the crank, converting torque to HP. The HP curve should cross over torque and be highest between 5-7k rpm

 

[jmt2028]

Understood. Here is my log from when I was driving home. It is a bit lengthy as it is a 30 minute drive. 12.08-08 is idleing right before I started to drive after I made your suggested global fuel and dead time adjustments. 12.08-09 and 12.08-10 are the cruising logs.

 

[Justin DuBois]

Understood. Here is my log from when I was driving home. It is a bit lengthy as it is a 30 minute drive. 12.08-08 is idleing right before I started to drive after I made your suggested global fuel and dead time adjustments. 12.08-09 and 12.08-10 are the cruising logs.

Looking at an average of the Combined FT values on your cruise, it looks like global deadtime or cruising VE could be adjusted. The Combined FT average is about 4.2% off.

You must be logged in to view this image or video.

I selected a long segment of the drive and did a rt click on the selected area and used the function SD VE Adjust (Combined FT)

You must be logged in to view this image or video.

This populated the VE table in the cruise areas of the map to dial in the fuel trims. Try updating your VE table with the function, or with the exported table I provided attached below.

It should look like this when the VE table suggestions are populated:

You must be logged in to view this image or video.

See all the numbers in Bold? Those are new numbers not yet saved to the ECU. Try updating the VE table. The next time you log a cruise, your combined FT should stay closer to +-0%