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420A Fuel system trouble.... time for upgrades. Fuel pump and regulator.

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Mitsubi-doo

Proven Member
49
26
May 26, 2025
Houston, Missouri
I planned on putting a pump in anyway.
any recommendations I was looking at walboro 190s or 255s. With stock wiring will a 255 be fine for a bolt on 420a ( overkill I know) what are some other recommendations
And from my searches my 1999 has a regular in the back behind the filter. Oem replacement? Modified regulator? has anyone been able to put a aftermarket adjustable regulator in that location, without having to redo the fuel system..
2 things ive been told about a 255 if I do it.
Factor wiring won't give it its full potential ( but my 420a doesn't have 500hp LOL)
2 adjustable regulator is needed.
Thank you!
 
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