Hello i am thinking of machining my fuel rail Inner diameter out to make a bigger ID so it will store more fuel and wanted to know if i bored out the main "long" line and can i get away with not boring out the top "short" line or do i have to bore them both out to the same diameter. What do the aftermarket ones look like and are the Inner diameters bigger then the OEM one's thanks for the help

 

dont waste your time doing that. You would also need bigger injectors and ecu tuning. You cant just plug in bigger injectors with the same fuel pressure being sent from the ecu. It dosent work that easy. The stock rail can support up to 350-400 hp