Quote:
Originally Posted by Kracka
No reason to hardwire an aftermarket fuel pump until that pump, and any larger single pump, can't support your requirements. The 9/12v switch is a nice feature to keep the pump from overrunning the stock FPR at idle/cruise, and also helps keep the pump quieter and cooler, which should ultimately lead to a longer lifespan.
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Good points. I am on a hardwired dw300 running e85 though and have not had idle or cruise issues, but I've only done 4-5 tanks so far and have no idea what my fuel pressure is at. I have heard of people pushing return lines off fittings, but mostly on pump. The car is getting another round of mods shortly though, so I might need to revisit.
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