Running dual MK4 Denso fuel pumps? Advice appreciated

Mo87NA

1987 7M-GE & 1991 7M-GTE
Mar 31, 2005
778
8
18
38
Upstate NY
Nick M;2009683 said:
Why is that? For 500rwhp you don't need dual pumps.

MarkIII4Me;2009727 said:
^
Agreed, I run a single Denso 285Lph denso pump with the 12v mod at close to 500whp with no issues. I would think the stock line size would need to be upgraded at the point you would need to run 2 pumps. Anyone recall at what whp you need to step-up to larger fuel lines?

I've always erred on the side of caution. Not to mention if I decide to go with a bigger turbo down the road, I won't have to worry about the fuel system.

I certainly agree it's not needed for 500rwhp, but again, I’m leaning towards this route with the future in mind.
 

Mo87NA

1987 7M-GE & 1991 7M-GTE
Mar 31, 2005
778
8
18
38
Upstate NY
It looks like the 400lph Walbro is pretty capable and should be plenty for what I'm planning.

Thanks again for the replies, guys.