mike13

iTrader: (27)

I have twin 340 pumps running E85 and they are maxed, what can I do to increase volume? Inline pump?

mike13

iTrader: (27)

Using Atomic's spreadsheet looks like I need 707 l/hr @80 psi.

Lonnies Performance

iTrader: (16)

Get larger injectors & lower your base pressure.
This will allow the pumps to work more efficiently & flow more at lower pressures.

You should not max out 340's until well over 1000rwhp.

mike13

iTrader: (27)

That's with E85?

HexenLord

How much power are you making? Twin 340s are good to around 1100whp under normal circumstances on E85. Either your pressure is too high and is killing off pump flow, or you've got a restriction somewhere in your fuel system.

You could try larger gauge wiring to the pumps to get more amperage to them.

mike13

iTrader: (27)

I'm right about 1000 rwhp, I haven't seen the fuel pressure drop, just going by the flow graph.

Lonnies Performance

iTrader: (16)

until the pressure drops your pump is ok...

Real world always wins over charts.

mike13

iTrader: (27)

Thanks.