The program on these modified pumps works fine now. We have been testing on the test stand and have had them on trucks for on engine testing. My truck 04. 5 has a stage2 on it and shows good power fully atributed to the CP3 mods. There is a definate need to cap the rail and use a Fass with at least 150gph rating set up to 40-50psi. I believe DPP is releasing a 200gph already set to 50psi. That would be a better selection if you have not already purchased a Fass. We have some already on the way from DPP. After seeing the results we installed our stage3 injectors and we already use a TST/CR fueling box. We could run level 8 and almost level 9. This hp should be very impressive and we will dyno at MM next week. (Ultimate test) We see the stanpipe in the tank and 1/2" hose as a plus if you are going to maximze the hp gain. Thanks, Brady