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TimboBlackkers TimboBlackkers is offline
Junior Member
Posts: 68
Join Date: Apr 2018
Car: '08 135i MT
Default In-Tank fuel pump upgrade on stock wiring - 05-16-2019, 05:08 PM

Hi Team.

Just a quick one. I've got a Walboro 525 on the way to replace the factory fuel pump. (Planning more boost and heavier E mixtures)

It looks like this pump can draw ~25A in normal operation.

Is it fine to use the stock wiring for this or should I wire in a 60A horn relay direct from the battery?

Car is an 08 6MT 135i

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