I saw these claims on Matt Blehm's site for ground wire kits on auto equipped cars, anyone got'em or soemthing similiar? I am interested in soime feedback on whether or not these actually make the tranny shift any different.

From the site....
Benefits are a much smoother idle and acceleration. for Autos, the 2-1 kickdown at stoplights is much more noticeable. I'm sure you've noticed that when you slow to 1-2mph and try to take off, the car is extremely sluggish and wants to stay in 2nd-- or even 3rd gear. With the ground kit installed, that is almost nonexistant. it downshifts properly and pulls away from the light. no more mashing the gas and watching your tires go up in smoke when it finally kicks down into 1st at 15mph!

 

exact same thread here
http://forums.maxima.org/showthread.php?t=347801
check it out and delete this one.