has anybody used this fuel pump yet???

[m1tch]

"The Walbro GSS341 model (also called the 255 lph HP) flows a little less than the Supra Turbo pump up to about 67 psi line pressure (24 psi boost), when 13.5 volts are supplied to both pumps. However, at 12 supplied volts, the Walbro GSS341 outflows the Denso 195130-1020 above 55 psi line pressure"

[Timmy]

So under a certain condition the walbro flows more; in actual real life working conditions the denso flows more. Not to mention again that the denso is more reliable and quieter. And as both pumps are probably suitable for this application in terms of flow i would pick the one which was better all round, flow is not everything when it comes to a fuel pump.