1) What is the rise rate of the stock JRSC FMU that comes with the D16 kit?
2) What is the flow rate of the "JR High Flow Fuel Pump" as offered on the website?

 

5:1 rise rate
190lph "upgrade" Walbro fuel pump

 

Will this pump work well enough with a 450cc DSM injector set up?

 

if you're getting bigger injectors, then you should have no need for higher than stock fuel pressure, since they will flow more instead. this is the concept behind the SMC fuel controller.

 

The upgrade is a 255 not 190

 

So, just to confirm, the JR High Flow Fuel pump as advertised off the website is a 255 lb/hr unit?

 

Walbro makes the pumps for Jackson.

There are 2 "hi-flow" models... the 317 and the 342. The 317 is what JR is selling. It is good for 85Psi. The 342 is good for 100+Psi (bad bad).

The DSM 450's run on stock pressure pumps - big injectors equals less pressure.

 

Yes, 255, and its made by walbro.