Hi my set up is a 84mm 12.1 compression lsv with a b18c1 head fully ported, skunk2 pro2 cams, rc 440 injectors and I was wondering if I needed a fuel pressure regulator, or will I be ok with my stock one when i get a tune.

 

i dont think you will need a fuel pressure regulator, but it doesnt hurt to throw a aem adjustable on there for 75 bucks for a little extra adjustment, i ran my oem regulator on 10psi and 420cc injectors for over a year.

 

No

 

Ok thanks guys

 

Me personally rather run more pressure and less duty cycle. Some injectors don't like higher pressures though.

 

Yes and RC as good as they are dont like alot of fuel pressure.