Help!!! installed Z32 afm on my sr20 and need advice with tune. K constant gets multiplied i.e. 500hp/290hp x stock k. is this right?? wont idle and leans right out!!! noticed k goes from 24xxx to 30xxx on change afm (NISTune ecu)

What ECU are you using for a base tune? What injectors are you using? What was your base K value? Which air flow meter were you using?
Have you put the new VQ map in for the Z32 AFM?

I can get the K value if you supply all of the above :)