Im going to be running a rhb5 trubo from a probe with the afc hack, and im wondering if i really need to install the walbro. is a 4th gen civic Si (EF chassis) good enough to handle the stock 8lbs of boost that turbo puts out (and the fuel it needs)?

 

i wouldn't run 8psi on ur engine, but if you decided you do want to, i would get the walbro and bigger injectors

 

yes i will have dsm 450's, can my stock fuel pump handle those?

 

Your stock fuel pump will support 280 whp at stock fuel pressure. I'd say you'll be okay.

 

im using stock FPR and fuel pump at around 8 psi..works fine