Sr20det extremely lean all of a sudden

[Kingtal0n]

Originally Posted by Rocketbunny240sx

I had my fuel pump changed not more than id say 3-4 months ago ? Im running a supra twinturbo 390lph fuel pump.

A used 16 year old OEM fuel pump with 150,000 miles on it from the first owner, and 50k on it from a second owner? Or you dropped more money on your fuel pump buying a new one than your engine is worth. Either way, I don't make the rules. It could be fuel leak, a ruptured ancient fuel in the tank that finally popped maybe your re-used 18 year old fuel lines with presumably all this pumping power.