I am addressing a higher boost RPM fuel starvation issue, I have the high pressure fuel pump side addressed but was wondering about low side limits and where they are. I have read ZZP feels the factory low pump will suffice as high as 700HP or so, any confirmation of this? Also does the in tank fuel canister become a limit and require modification at any point? I am concerned the pump may drain the canister faster then it can fill. My setup current should be low to mid 600's

 

on my 2005 car (which has a different canister design than 06+) i had to run a surge tank and inline pump as the 300lph pump intank would suck the canister empty prior to it filling

once this was addressed, i then hit injector limits as I continued increasing power on E85. on an LNF the intank pump should be fine as the HPFP pump is doing all the injection pressure work. The canister can always be perforated to increase the fill rate, but the risk of low fuel hiccups becomes more prevalent.