When do you need a boosted fuel pump?
Thread Starter
Supporting Vendor
Joined: Jul 2010
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From: Republic of Texas
When do you need a boosted fuel pump?
At what point boost wise does one need to start looking at a high flow, or boosted fuel pump?
I'm only running 6psi on 60lb injectors for the moment, but i'm curious what's on the horizon.
thanks.
I'm only running 6psi on 60lb injectors for the moment, but i'm curious what's on the horizon.
thanks.
Race Director
Joined: Sep 2005
Posts: 11,060
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From: Pasco WA
Good question, but the answer may vary alot. I had to add a BAP when tuning my SC installation on the dyno, and my fuel pressure dropped at about 5800 from 61, to 47, and dropping. This is a H/C stock block Z with the A&A Vortech kit, which includes a Lingenfelter pump, and #60 injectors. Added a Magnaspark BAP, and actually had to retune because it was too much fuel at that point. My tuner uses a Mustang dyno, and his software gives him alot of parameters. I would have had to lower the rev limiter, and at that point, it was almost 75 less RWHP.
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From: Machineguns, because I don’t compromise
Melting Slicks
Joined: Mar 2005
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From: Okinawa
It depends on a lot of things, fuel ocatane, how much ethanol you have in your gas. Since its a return style setup you can get away with some more since the regulator isnt at the rear of the car. I believe once that fuel pressure gauge starts to drop 10# deal is done you need more pump, If your needle is barley moving down a couple pounds is one thing a boost a pump would work, but in either case you should have a af gauge and fuel pressure gauge in the car to monitor your pump. Fuel pressure should stay constant dont band aid it. It will kill a motor in the long run. Hp that any combo will support will vary with location.
