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Honestly I don’t know... haven’t been a big fan of DW’s in the past but I haven’t used the new one personally so it could be the new best thing ! 
 

be mindful the Walbro ratings are always honest and boosting a 525 to 18-20v would push it well into the 600’s too 

Edited by JETURBO

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@JETURBO guessing a 525 would be a no-brainer as a lift pump feeding dual pierburgs?

 

Edit

I notice plaz only sells the 535 / F90000295 without the check valve, no good for standard application, correct?

Edited by camo86T

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It’s actually imho way too big as a lift for the effort involved to fit it 

a Walbro 400 E85 pump requires zero wiring upgrades and will supply feed to a surge in great volumes. 
 

remember surge pumps return to surge so it’s not required to have a massive lift pump 

 

Fuel starve on a dyno is typically due to the rail emptying due to outgoing pumps not keeping up ... Typically not an empty surge. 
 

This caters for 99% of all applications... a full race circuit car is a different story and would benefit from as big of a lift pump as you can get 

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16 minutes ago, camo86T said:

@JETURBO guessing a 525 would be a no-brainer as a lift pump feeding dual pierburgs?

 

Edit

I notice plaz only sells the 535 / F90000295 without the check valve, no good for standard application, correct?

 

This is all you need for e85 lift pump.

 

https://www.tiperformance.com.au/products/walbro-250lph-fuel-pump-kit-e85-f10000302/

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Hypothetically, if you wanted to wanted to go all out to avoid heating of fuel would it be possible to run return to main tank and have a big arse lift pump

 

or plain not practical?

 

@Romulus apologies for hijacking thread

Weren't you M6 something something before?

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Stink hole has a point and I use smaller lift pumps for single Pierbergs 

but for twins I go the biggest without having to do crazy extra stuff just to make work correctly 

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Not many applications when you are more than 20 seconds WOT. 

 

32 minutes ago, camo86T said:

Hypothetically, if you wanted to wanted to go all out to avoid heating of fuel would it be possible to run return to main tank and have a big arse lift pump

 

or plain not practical?

Defeats the purpose of a surge. 

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The DW440 can be staged to run at 65% at low load and triggered to run 100% full load. Then there's the option of boosting voltage. I'm not sure if an off the shelf surge tank will fit my SZ Territory otherwise I'd retain the intank 460 and go Plazmaman external with twin staged Pierburg pumps.

 

32 minutes ago, camo86T said:

@Romulus apologies for hijacking thread

Weren't you M6 something something before?

Roger.

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I had twin 044s on a plaz surge and have got 2 pierburgs to replace them so will be more or less same as yours, haven't opened up the fuel tank to check lift pump but would be surprised if it wasn't a 460

 

Q about return line was conjecture only, obviously the standard pot has its scavenging limits and in that scenario the surge would basically be a buffer albeit an expensive one

 

I wanted to use a hobbs switch so the 2nd pierburg only came on at ~5psi boost, pretty sure this has been done before

Edited by camo86T

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I used a hobbs pressure switch to activate the 2nd Pierburg external pump. IIRC is was set to come on over 11psi. My G6ET made 511rwkw on E85 using this setup.

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