Mark I use the Walbro 460 E85 pumps with the Fore FC3 Triple Pump Staged Controller. Even though I am staging the pumps the biggest issue is the big amperage draw as pressure demand increases. On the Walbro's at say 6bar a pump is pulling 19amps or it pulls just over 15amps at 3bar.
Although my system runs well with the multiple Walbros I just came across the Asnu FP580X (E85) pump. By comparison it is only pulling 12.5amps at 6bar and 7.7amps at 3bar.
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Cheers
Colin
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