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Signman · 11-20-2020, 09:49 AM

Make sure the changes you are making are actually being saved to the ECU. Disconnect then reconnect and check tables edited.

Swap USB cable and serial to usb adapter. I chased my tail for most of a season because my usb cable was bad.

Change O2 sensor to new or known good sensor. If you are running closed loop which is a good idea when the map is out to lunch or data logging open loop the values will be off.

11-20-2020, 09:49 AM	#6
Signman Senior Member Join Date: Oct 2003 Location: Lower Slower Delaware Posts: 535 Likes: 22 Liked 269 Times in 99 Posts	Re: Fast XFI problem Make sure the changes you are making are actually being saved to the ECU. Disconnect then reconnect and check tables edited. Swap USB cable and serial to usb adapter. I chased my tail for most of a season because my usb cable was bad. Change O2 sensor to new or known good sensor. If you are running closed loop which is a good idea when the map is out to lunch or data logging open loop the values will be off. __________________ Frank Ferrucci I/SA 1271 "Be Thankful for the Gifts You are Given"