okay, just put a supercharger on gsr in a civic hatch for a friend. got a bigger fuel pump and 310cc injectors running 6lbs of boost. I have the fuel pressure set at 42psi and it's blowing some black smoke. I haven't had a chance to hook up a air/fuel ratio guage yet, but I do have one. Trying to understand why it's blowing a little black smoke. The car pulls really hard but seems to be running rich. I had the same set kind of set up in my hatch and never blew black smoke. any ideas?

 

rule of tumb:
black smoke- extra fuel burn
blueish/grayish smoke- oil burn
white(sweet smell) smoke- coolant burn

check the a/f mix

 

do u have a jrsc fmu hooked up?? if so lean it out with that...

are u getting the black smoke at idle or wide open throttle?