Gas gage reads full all the time!!!!!!!!

well all the aftermarket replacements read linear.....original mopar units are non-linear so the replacements are always off unless you use some sort of corrective circuit you can buy separate and program it to read correctly.....one thing I will say though, is on the aftermarket sending units when you fill it up they read full.....and when they get near "E" on the gauge you still have about 1/4 tank to 1/2 tank of gas left.....so you never run out.....