Originally Posted by wingman
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.

Basically an adjustable resistor I assume?

https://www.tanksinc.com/index.cfm/page/ptype=product/product_id=748/mode=prod/prd748.htm

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 twocents up beer