‘96 Corvette Negative Fuel Trims. Help!

**johnny_b** · 07-16-2020

The o2s have been like that since I bought It. I will adjust the tune for that. Kinda doubt that’s causing max negative fuel trims but It can’t hurt.

im trying to avoid band-aiding the problem through tuning

**NomakeWan** · 07-16-2020

If they've been like that the whole time, but the trims only started acting up now, then there's no reason to suspect the location of the sensors to be the culprit.

**johnny_b** · 07-16-2020

Originally Posted by NomakeWan

If they've been like that the whole time, but the trims only started acting up now, then there's no reason to suspect the location of the sensors to be the culprit.

as far as I know the trims may have always been messed up. That was the reason I converted to obd1 as I’ve tuned several obd1 lt1’s. I’ve been using the data logs to point me to things like the leaking injector and the regulator.