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3 fuel pumps! WHAT!!

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Old Mar 12, 2012, 06:45 PM
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Yes you are technically going to waste more gas. Pumps have to get energy from something to run... The more power you draw, the higher the resisting torque on the alternator.
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Old Mar 12, 2012, 06:49 PM
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Originally Posted by SyZyGy1394
Yes you are technically going to waste more gas. Pumps have to get energy from something to run... The more power you draw, the higher the resisting torque on the alternator.
LOL maybe 0.015 less mpg from the added strain on the alternator
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Old Mar 12, 2012, 07:02 PM
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maybe the 3rd pump is just dumping it out on the ground ?????
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Old Mar 12, 2012, 07:06 PM
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The one part of the equation not discussed is if the second and third pumps are on a Hobbs switch or not. They very well may not even be turning on at all. With an aftermarket fuel pressure regulator, it will be able to control the fuel pressure pending your return line is large enough back to the tank. However the part of the equation not brought up that is the effect three fuel pumps has on the temperature of the fuel. Surely if all three are running all the time, the fuel temperature will heat up and make the fueling system less efficient, and may affect gas mileage as the fuel temp increases.
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Old Mar 12, 2012, 07:24 PM
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He's probably got 3 pumps on stock injectors because the previous owner parted the car before he got rid of it...
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Old Mar 12, 2012, 07:37 PM
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Previous owner must made huge whp... Idk i will just swap out to new single pump, thats just me.
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Old Mar 13, 2012, 04:34 AM
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My main concern is should I go to a single pump or is it to much work and not worth it
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Old Mar 13, 2012, 05:04 AM
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Originally Posted by vinnieg
My main concern is should I go to a single pump or is it to much work and not worth it
Whether its a lot of work or worth it is in the eye of the beholder, my opinion though If I were u I'd wanna know how it was routed and wired so I'd just redo it. I have fun working and modding my cars so it never seems like work to me.
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Old Mar 13, 2012, 05:24 AM
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Unless that was a dedicated drag car I can;t see why a street driven vehicle would need 3 pumps.
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Old Mar 13, 2012, 06:21 AM
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I agree its never work
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Old Mar 13, 2012, 06:23 AM
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your tune is causing your bad mileage

not your pump
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Old Mar 13, 2012, 12:43 PM
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Simplify it all. Go back down to one pump (or for heaven's sake just 2). And take the car to a tuner and make sure the injectors are scaled properly
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Old Mar 13, 2012, 04:21 PM
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i have a tune right now im going to buy fic 1250cc and have my car tuned on that
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Old Mar 13, 2012, 04:27 PM
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Wow! I can see someone releasing a triple pumper soon lmao
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Old Mar 13, 2012, 04:36 PM
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Originally Posted by EvoJoeIX
3 fuel pumps with stock injectors?

Is this real life?
That^

The guy who did that to the car on stock injectors is an idiot and if you havent changed it yet your in the same boat....
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