is it ok to run rich? i do have a vafc but its not installed yet. does running rich affect my cars engine life??

 

I'd worry about the following:

1. fouled plugs
2. aftermarket catalytic converters do not like rich running cars
3. bad for o2 sensors
4. soot all over your rear
5. poor gas mileage

when you install the vafc lean out the partial throttle fuel maps. I did this and the car runs very well

 

Doesn't the closed loop mode work with the Kenji ECU?
At partial throttle it should be Lambda , right?