i plan to run 10 psi and wanted to know if i have to ditch my 42's for something bigger? i was pushing 8psi with 42's,single walbro and stock FPR and no problems. i'm not using a Fuel managment system for the blower either.

 

I can't tell if you have ported heads or not by your signature. If you do you will be close to maxing the 42 lb injectors at 12psi.

 

i think i will stick with 10psi for now and later on add more... so for 10psi would i be good?

 

Im LS1 but making 570rwhp with 42# SVO's and 10# through an auto.

 

do you have two fuel pumps or a fuel pressure regulator?

 

Order a set of 60s from Racetronix.

 

Eric from Victory racing said i would be fine with the fuel pump,42's. but to just add a FPR.