Hondata

I supposed I should have mentioned that the purpose of the external FPR was for running ethanol. It looks like those changes got me closer to target AFRs, but yes, definitely requires additional retuning.

Hey all, I'm running an 07 Si with a Kraftwerks supercharger kit (1000 cc Grams injectors) which has been tuned. I'm adding an external fuel pressure regulator with a 1:1 manifold reference, tapping into the manifold obviously, and I understand that this changes differential fuel pressure across the ...