The Process West twin pump kit struggles to get base pressure to 58.5psi at idle....I know if a few that have the reg adjusted to the minimum but still see low 60s psi wise at idle. The best way to fix this is fit a -8 return to the main tank and modify the cradle to accept the -8 braided line so its a true -8 return all the way not bottlenecks. Rail wise you will get away using the stock one this way but going to the Plazmaman item is hard to ignore with its easy fitment/removal compared to some others. As mentioned consulting tuner is the fool proof way but also as mentioned they sometimes push what gets more mark up for them not what may actually suffice.