Fuel Pump Upgrades
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BlownC5




Joined: 21 Jan 2005
Posts: 12

PostPosted: Sun Jan 30, 2005 8:26 pm    Post subject: Fuel Pump Upgrades Reply with quote

What are my options? Does the boost-a-pump really work and is it reliable?

How much HP can the stock fuel pump support?
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6Shooter




Joined: 23 Jan 2005
Posts: 38
Location: Texas

PostPosted: Sun Jan 30, 2005 10:30 pm    Post subject: Reply with quote

I am not familar with the "boost-a-pump", but it seems that I remember some info I found once from GM or LPE that the stock pump is good to about 550hp (flywheel hp). I try to confirm tomorrow at work.
BTW, who makes the "boost-a-pump"?

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6Shooter




Joined: 23 Jan 2005
Posts: 38
Location: Texas

PostPosted: Tue Feb 01, 2005 1:59 pm    Post subject: Reply with quote

Found my info Exclamation
97-02 and some 03 models (very few 03's) use a gerotor design pump. According to some engineers I know, they say this pump is much better than the newer fuel pump. As it comes from the factory it will support up to 550hp (flywheel) at the stock pressure setting of 58psi. My notes also say that this pump will respond well to a "voltage boost" to increase the output.
The 2nd design 03 and all 04's use a different fuel pump that is a turbine design. Not recommended for anything over 500hp and it will not work properly when voltage boosted --- it will aerate the fuel too much and the pump temp increases to the point of failure Shock I also know that GM has experienced numerous problems with this 2-design pump in stock applications.
Why fix it when it isn't broke Rolling Eyes
Hope this helps!

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BlownC5




Joined: 21 Jan 2005
Posts: 12

PostPosted: Thu Feb 03, 2005 9:06 am    Post subject: Reply with quote

I found the boost-a-pump here:

https://www.aandacorvette.com/cart/show_items.asp?MainCatID=18

made by Kene Bell.

Great info on the fuel pump. Thanks.
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NinjaZ06




Joined: 02 Feb 2005
Posts: 103

PostPosted: Fri Feb 04, 2005 7:22 am    Post subject: Reply with quote

Would you be better off replacing the stock pump with a higher capacity first? Doesn't Racetronix make a direct replacement pump that is good for 600+HP? a 255LPH?
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BigJohn
Vendor



Joined: 08 Jan 2004
Posts: 209
Location: Texas

PostPosted: Fri Feb 04, 2005 9:13 pm    Post subject: Reply with quote

I actually got the Walbro unit from LPE. It is supposed to be good for 600hp.
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kwik 99




Joined: 22 Mar 2005
Posts: 2

PostPosted: Tue Mar 22, 2005 8:43 pm    Post subject: Reply with quote

I put one on my car and seems to be doing its job.
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teamzr1




Joined: 29 Jan 2005
Posts: 76
Location: West Coast

PostPosted: Wed Mar 23, 2005 12:42 am    Post subject: Reply with quote

Boost-a-pump is nothing more then a trigger that increases the voltage to the pump to make it work harder and flow more.

Problems are many install this using the stock fuel pump wiring which cannot handle the increased current load, some cases melts the wire so you have to install larger gauge wire.

Its not fool proof, its supposted to slowly increase pump voltage but I have seen them really just jump from 13 volts to 17 volts when the pump really did not need to work harder.

Best case is a good in tank fuel pump that will maintain proper pressure throughout the engine load.

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Custom ECM and PCM Tuning
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