- Feb 24, 2008
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I'm getting my fuel system ready for power adder, but now i'm a little confused about FMU. At first i want to use the stock injectors, until i can afford maybe TwEECer or PMS. I found rail mount BBK, Aeromotive and Mallory adjustable fuel pressure regulators that have boost/vac rise ratio 1:1. So those will rise fuel pressure with boost, but is it enough, or is there still need for a FMU when using one of those AFPRs?