Has anyone had success using a device like this inline to compensate for their incorrect aftermarket sender/factory gauge? I've heard from some that they work, and others that they do not.
they do work if you're fairly close (within 1/4 tank). I've installed quite a few as it sure beats filling, emptying, tweaking the float arm and repeating with no gain. A bit of a PITA due the wiring etc. but less so than the mentioned circle jerk