So I installed a new walbro gss341 255lph fuel pump. It works but I noticed it draws more current than the stock fuel pump fuse is rated at. I have an obd1 s52 swapped e30. So stock fuse is 7.5 amps but the walbro draws about 7.6 amps at idle. According to walbro it will draw 8-10 depending on fuel pressure. Would I need to increase my fuel pump fuse size? If so, how much can the stock wiring handle? I do not want to fry anything.
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Use the stock wires to activate a relay. I placed my relay by the trunk battery and ran new wires from the relay to the fuel pump..Originally posted by manuel325i View Post88 e30/s50 gt35r turbo m3
96 gt4094r turbo m3
452 rwhp, 455 rwtq at 14 psi 91 octane
681 rwhp, 684 rwtq at 25 psi E65 -
my TRE 255lph kept blowing the 7.5 fuse.
The wiring can handle a 10. Been using a 10 amp for 4 years no issue.
1991 325iS turbo
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I was thinking of putting a 10amp fuse. I'll try that. Thanks.Comment
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