Originally Posted by coconutking123

Hows it going everyone first post here. I have a 91 s13 coupe with a mostly stock ka twin cam with just emissions/vacuum delete. I just got a new fuel tank for it as well as a new fuel pump I installed them at the same time. Everything is all fine and dandy with the pump when I first start the car as its pretty quiet maybe just slightly louder than stock but after like 10 or so minutes of driving around the pump gets VERY loud like I can almost hear it over my fart can catback and its very noticeable from outside the car. If I turn the car off for at least like 5 or so seconds and start it back up the pump goes back to being quiet but then after some driving it gets progressively louder again. The car isn't bogging or missing and I have a new fuel filter+feed line from the pump. Any thoughts?