do i have to cut my stock one to install an adjustable FPR?

 

On the B&M CommandFLO you have too. Also, will have to get a fuel pressure gauge to go along with it. So you will be able to re-set your fuel pressure. B&M makes a Fuel Pressure Set. You get a new banjo bolt along with it. It replaces the stock one off the fuel filter, so you can screw the gauge into it. I picked up a "T" and some other bits of hardware. Sooo... I could have one side of the "T" hold the B&M gauge. the other side hold the sender for my Auto Meter cabin gauge.