ECMlink 2G FIC 850cc dead time

[775TSI]

Question. I run FIC 850cc which at 43.5 fuel pressure and -47 global. My car will not stay running at the recommended 330 dead time its too lean. What can I do to get the car to stay running to op temp so I can adjust 50hz to proper STFT and LTFT Lo?

 

[Dsmkauai]

What's it trying to idle at? Also you can tune the maf sliders to richen the mix more at idle. What fuel map are you using?

 

[jery1234]

The 330 dead time is just a starting point , so play with it . Add another 100 ms & see if it gets better .

 

[tmoney20g]

gotta keep going back and forth with both deadtime and the 50hz maf slider to get LTFT Lo at 0% and AirFlowPerRev at 0.24-0.25. 1g ecu require waiting about 2 minutes after adjustments for the ecu to "normalize", 2g's should do it quicker. This is typically the most time consuming part of "tuning". But once this is set properly, the rest is pretty downhill.

 

[775TSI]

Right now I'm at 650 deadtime . I'm using the stock 2g fuel map. I'm running gmaf and fic 850. The starting point as they say it should stay pretty close to that but I doubled it just to get the car to idle. I've already checked boost leaks.

 

[jery1234]

Posting a log would help .

 

[775TSI]

In all honesty a log won't help because its all over the place. I set my deadtime at 400 and was able to get STFT to 2% but my LTFT lo is stuck at 12.5%. Adjusting the 0-400hz sliders do nothing. Even moving the 500-600 hz slider does nothing to LTFT lo.

 

[jery1234]

Have you reset the fuel trims after the changes to dead time ?

 

[775TSI]

I havent touched fuel trims. The sliders start at 2 rpm. I adjusted some shit got my global to -47.3 dead time to 330. Results are combined ft +/-2%, LTFT lo 1% and STFT +/- 1%. Afr hovers around 14.5 to 15.