I'm having a problem with getting my injectors scaled. I have GSC 280 cams and a 10:1 compression engine. It's running E78 right now (winter blend). At idle I see high 20's (27-29 usually) for 1 byte load at about 1250 RPM, the idle is absurdly stable for such big duration cams also. I blame this on the high compression
The LTFT mid is adjusting as expected consistently, given straight smooth highway driving, however I can't say the same for the LTFT low. Sometimes it will adjust, sometimes it wont, given similar changes in scaling and latency values. I'm wondering what the criteria for adjusting the LTFT low is in the ECU, as my V7 definition has something wrong with the values. I can see the table is there, but there are no values in it. Can someone help me out with this? I'm using the XML file for 94170715 with the appropriate rom from tephra's thread.

 

Log what Ariflow Hz you are at idle. Your issue could be that because you are idling so high (rpm) that you are not in the Hz range for the LTFT low to adjust.

Find the "Closed Loop-LT Trim Control" table in the Global Fuel Settings.

The table will show the crossover points for the various MAF Hz reading. Make the following changes....

Low -> Mid = 62.50
Mid -> Low = 50.00

This should allow you enough room at idle for the LTFT Low to adjust.

 

In my computer those tables are undefined. Could this be because I'm using too old a version of ecuflash?

 

What Rom version are you using?

 

94170715 non speed density, no live map. When I get home. I'll post a screenshot of my tables.

 

OK You have the latest rom version so the table should be in there. If it isn't please let me know. I will send you the XML you would need to see the table I speak of.

Paul

 

I was behind a version of the actual ECUflash software. I didn't know this made a difference. Once I loaded the new version, I was able to see and actually edit the table you were talking about. I could see it in the older version, but could not see any values next to the words. I should be fine now. Thanks a lot.

 

Could you send me that xml bec i don't have that table. I'm running rom 94170008.

 

0008 isn't supported sorry. Upgrade to 94170015.