Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 3m 11d Gender: Male Location: Perth Posted 20/04/15 02:21 AM Share Posted 20/04/15 02:21 AM WARNING (Amperage) The Walbro and Aeromotive pumps used in either single or dual applications obviously produce more flow than stock pumps - BUT AMPERAGE IS MUCH HIGHER. Example: Up to 73% 14.2-17.2 vs 9.9 amps (Walbro Gss340). Therefore, the stock wiring system is incapable of handling the increased loads and must be upgraded or replaced. This higher amperage also negates using the BOOST-A-PUMP™ and it’s 17.5-20V advantage. The BOOST-A-PUMP™ is not designed to operate these high amp pumps. Check out the flow numbers and cost of the 2 approaches. See Kenne Bell “Fuel & Horsepower Estimator” to determine HP.Just read this from the above post. As you said it pretty much rules out voltage boosting for these high amperage pumps.Jet. People who think they know everthing annoy those of us who do.Unless Im misreading this, the issue lies in the stock not being capable of support the higher current draw of the larger pumps BAP or not? Does anyobdy run two pumps on stock wiring? BAP may not be the most suitable unit for the OP's needs, how ever the Aeromotive unit continues to stand out as it will run the pumps at a reduced speed at low loads with the obvious benefits that comes from that approach. It's also good for 40amps. Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 3m 11d Gender: Male Location: Perth Posted 20/04/15 03:15 AM Share Posted 20/04/15 03:15 AM Worth a watch, explains some of the science behing the Aeromotive fuel Pump Speed controller and IMHO the benefits of running reduce pump outputs at low load. Link to comment Share on other sites More sharing options...
HI PSI Member 1,586 Member For: 18y 7m 9d Gender: Male Location: Central Queensland Posted 03/06/15 08:06 PM Author Share Posted 03/06/15 08:06 PM Research has indicated that the two pump running at 18 volts would have a current draw of around 47 amps. Given the Kenne Bell boosters having a maximum draw of 40 amps, this option is not practical. It seems that my only other option would be to fabricate a new tank and build addition pumps an surge into it. Time will tell if the curent system will be up to the task Link to comment Share on other sites More sharing options...
Wilko16 Donating Members 1,672 Member For: 17y 1m 13d Gender: Male Location: Melbourne Posted 03/06/15 11:30 PM Share Posted 03/06/15 11:30 PM (edited) As voltage rises, less amps are neededHow did you calculate that 47amps? Edited 03/06/15 11:31 PM by Wilko16 Link to comment Share on other sites More sharing options...
HI PSI Member 1,586 Member For: 18y 7m 9d Gender: Male Location: Central Queensland Posted 04/06/15 06:41 AM Author Share Posted 04/06/15 06:41 AM I didn't. At my request, Dave at KPM calculated the current draw and provided the figure. I do not have any knowledge of the field, and I would appreciate a second opinion. Link to comment Share on other sites More sharing options...
Wilko16 Donating Members 1,672 Member For: 17y 1m 13d Gender: Male Location: Melbourne Posted 04/06/15 07:53 AM Share Posted 04/06/15 07:53 AM Ahh fair enough, I wasn't implying you were wrong just curious...But if the fuel guru dave, worked it out I'm sure it's correct It's amazing the amount of power needed Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 3m 11d Gender: Male Location: Perth Posted 04/06/15 09:08 AM Share Posted 04/06/15 09:08 AM What pumps hi psi? 47 amps sounds exceedingly high if the voltage is up around 18v Link to comment Share on other sites More sharing options...
HI PSI Member 1,586 Member For: 18y 7m 9d Gender: Male Location: Central Queensland Posted 04/06/15 09:32 AM Author Share Posted 04/06/15 09:32 AM KPM 1500 hp module - Two Walbro 460's Link to comment Share on other sites More sharing options...
Wilko16 Donating Members 1,672 Member For: 17y 1m 13d Gender: Male Location: Melbourne Posted 04/06/15 11:26 AM Share Posted 04/06/15 11:26 AM Gonna need 50kw just to turn the alternator Link to comment Share on other sites More sharing options...
bjc Donating Members 2,823 Member For: 21y 3m 30d Gender: Male Location: Townsville Posted 05/06/15 01:00 AM Share Posted 05/06/15 01:00 AM The 47 amps surely would be them two combined so if they are 23.5amps each at maximum just get two 20amp boosters? Link to comment Share on other sites More sharing options...
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