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Did the Walbro pressure relief mod today

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Old Mar 24, 2010, 04:50 PM
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Did the Walbro pressure relief mod today
Pretty simple, took me all of about 20 minutes. Took the Fuel sender out, dislodged the walbro and followed THESE DIRECTIONS

I also installed a new Amsoil air filter in favor of my AFE Power filter, and took it out for a few test rips. Good to go, car pulls great! AFRs are steady 11.6 tapering to 11.3 at redline on 28psi!
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Old Mar 24, 2010, 05:16 PM
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good info, i mite do this soon.
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Old Mar 24, 2010, 05:23 PM
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Cool, good info.
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Old Mar 24, 2010, 06:32 PM
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Just a FYI, most Walbros installed at reputable shops already have this mod done, I didn't install mine, and wanted to see if it was done or not, it wasn't so I did it...
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Old Mar 24, 2010, 06:36 PM
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So this is mod is a replacement for a double pumper setup if done correctly?
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Old Mar 24, 2010, 06:44 PM
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what are the real benefits
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Old Mar 24, 2010, 06:48 PM
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Originally Posted by compscibOi
So this is mod is a replacement for a double pumper setup if done correctly?
Not at all... never said it was

Originally Posted by gfng
what are the real benefits
To keep the flow from decreasing as the pressure increases, once the relieve valve opens flow drops dramatically on the intank walbros... granted that isn't until around 75-80 psi (30 psi + 45 psi base fuel pressure)
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Old Mar 24, 2010, 07:24 PM
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ill have to give this a try ...

im assuming i shouldnot do this on a double pumper set up ,.....
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Old Mar 24, 2010, 07:29 PM
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Originally Posted by gfng
ill have to give this a try ...

im assuming i shouldnot do this on a double pumper set up ,.....
Your fuel needs must be insane if you have to do this to a double pumper...
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Old Apr 11, 2010, 10:35 AM
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Im doing this to my double pumper right now. With 2150's, fuelab reg and a wilson rail Im going lean above 34 psi on my 6262
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Old Apr 11, 2010, 11:40 AM
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This is why buschur asks you if you are running E85 when you order a double pumper, if you are just using pump gas they won't bother to do it.
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Old Apr 11, 2010, 01:23 PM
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what is the benifit of doing this mod?
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Old Apr 11, 2010, 02:00 PM
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Originally Posted by Spoolin4g63
what is the benifit of doing this mod?
More available fuel if you're running higher boost levels.
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Old Apr 11, 2010, 02:29 PM
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Originally Posted by Fast_Freddie
Pretty simple, took me all of about 20 minutes. Took the Fuel sender out, dislodged the walbro and followed THESE DIRECTIONS

I also installed a new Amsoil air filter in favor of my AFE Power filter, and took it out for a few test rips. Good to go, car pulls great! AFRs are steady 11.6 tapering to 11.3 at redline on 28psi!
Ahh, i've been meaning to do this. Very nice bro!
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Old Apr 11, 2010, 04:12 PM
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http://www.walbrofuelpumps.com/

I was wondering does anyone think this could be the difference between the high pressure and regular 255 pump?
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