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View Full Version : Auto VE tuning, engine runs extremely lean for the few minutes.



roy
October 22nd, 2017, 02:56 AM
Hi all,
Been a few years since I have been on here. So when attempting Auto VE tuning, the car runs extremely lean for the first few minutes , then I am able to log and make adjustments. It doesn't matter if the car is at operating temperature for tuning or if it is cold . If I shut the car off and restart, it will read between 17:1 and 18:1 AFR, but after a few minutes the AFRs settle down to 14:6 and 14.7 AFR at idle and light cruise and I am able to continue tuning. My wideband is an Inovate LC-2 and is functioning flawlessly as compared to a standalone wide band at a dyno facility.
Is this something that is inherent to LS1A engine controller or maybe I didn't get the Auto VE tune file set up correctly? The car made 460 PS on the dyno and AFR at WOT were 12.7 to 12.9.

I can attached the tune file if necessary.

joecar
October 22nd, 2017, 08:13 AM
Can you post your tune/log files...

roy
October 23rd, 2017, 04:34 AM
Hi Joe,
Long day at work, but now home. Here are the files.

joecar
October 23rd, 2017, 04:48 AM
Ok, I'll take a look shortly...