Ok i have a aem fuel regulator its not universal its the one that bolts to the rail older honda style. What fitting should i have inside it so it is compatable with a walbro 255..

And is it normal to drop in vacuum from 22 to 13 from stock d16 injectors 235cc to 780cc
they are peak and hold style.. I was thinking its doing this because its untuned yet this was at idle.... about 40-42psi on the regulator at idle..

 

get it tuned before you ruin the motor.

 

x2

Its probably pig rich therefore barely running hence the loss in vacuum

 

no i am not driving it anywhere..

 

get a basemap for your injector size and setup before you mess something up.


just use the middle sized orfice and bring the others with you to the tune just in case.