What is the difference between the two? I've read a little bit about people saying the high pressure is better for forced induction. But will a high volume not work with forced induction? This ad for the BBK (Walbro) 255 high volume pump claims that Does this mean both HP and HV? So, let's say I have a car with basic hci and exhaust etc, I put in a 255 high volume pump, will I regret it in the future if I want to add a supercharger? Or can I adjust the pressure with the AFPR to catch up to the performance of the high pressure pump? Or, if I just put in a high pressure pump, will it give me trouble being N/A? I heard of people having trouble getting pressure under 40 psi with the high pressure pump. Thanks!