Can somebody help us please?
Next saturday we have to go to the strip and we don't know how much pressure we have to set the fpr for an 80 shot direct port for a jdm b18c.

 

you set the pressure to whatever your jetting chart was calibrated to and fine tune from there with a wide band.

But I am assuming you didn't setup the nitrous the correct way and you run the fuel supply from the rail in which case, more than likely your fuel pressure should be ~40 psi(though it is still dependant on whatever your jetting chart was calibrated to). But I would still check with a wide band to make sure your not leaning out.

 

Thanks for your info
Any other help please???

 

ttt