walbro pump ?

[shawnz]

Im running a walbro gss 242 with blue tops to about 23 lbs of boost.Would the walbro 340 pump be a better choice .I dont know the flow rates on these pumps.I already bought the 340 just havnt installed it yet

 

[d0n_3d]

a hotwired 340 pump will be good until the high 10's range...i think you are safe with a 340

 

[87GN_70GS]

Plotting the hotwired (13.5v) 242 pump curve on the same graph as the 42.5 #/hr injectors, the demand (injectors) exceeds the supply (pump) at around 68 psi rail pressure and 43 gph (~515 hp). With 23 psi boost means ~45 psi base fpr is all you can get away with before rail pressure will start to drop through the traps. Not hotwired? Don't do it.