I I've got a 95 firebird formula with a 96 lt1. It's a factory V8 car and its have weird stumble issues and is running very rich. I recorded some data driving to and from work with and with out O2 sensors. Does anyone know how to read the data and figure out what the problem is?

 

Checkout lt1pcmtuning.com. He has a lot of info on that site...

 

You aren't getting any codes? Sounds a little odd. Have you made any changes? Fuel pressure/injector size/throttle body?