walbro 255lph

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Dec 20, 2005 | 08:58 PM

rexabusa

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walbro 255lph

can anyone tell me if i need to uprate fuel pressure regulator after fitting walbro to standard jap wrx.also does running rich harm engine
thanks

Last edited by rexabusa; Dec 20, 2005 at 09:00 PM.

Dec 22, 2005 | 10:36 AM

scooby_mania_yeah

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From: BIRMINGHAM

If your gonna fit an upgraded fuel pump then you should get a remap.. To level out the amount of fuel....#
#
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Dec 22, 2005 | 10:48 AM

New_scooby_04

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From: The Terry Crews of moderation. P P P P P P POWER!!

Quote:

Originally Posted by rexabusa

can anyone tell me if i need to uprate fuel pressure regulator after fitting walbro to standard jap wrx.also does running rich harm engine
thanks

Asked about this myself recently, apparently the std reg is fine with the Walbro 255l. People usually uprate the fuel pump to prevent the std one from struggling after a remap. Scoobies run rich as standard and if I understand it correctly, it's your ECU that makes the requests of the fuel pump- its not the case that just cause you fit an uprated pump, it'll flow more fuel all the time.

Ask an expert though to be sure!