as it turns out my engine harness has been cut I have no 02's no wires or anything how is this going to affect performance

 

your car will never run right

ever

 

u need to get the sensors wired up

 

Elaborate on the not running right....won't it just run rich or is it speed density thing because a guy I know has a 89 maf car and it has no 02's and his drives fine except for the occasional black puff of smoke

 

No feedback from O2 sensors to the ECM = a permanent open loop condition. A/F control will be based on the preprogrammed base tables and adaptive strategy (system A/F trim "learning") will never occur. Will it cause a problem in the system's ability to provide better MPG?..... yep. Will it affect performance or driveability..... nope.... provided nothing else in the EFI system has problems.

 

You'll get it eventually