My inner skeptic says that grounding kits are Voodoo, unless existing wiring is corroded or has loose contacts.. If they do what is said of them, why the multimillion dollar corporations and overpaid electrical engineers have not caught on is a mystery to me. If they actually help a trans shift better, I am sure there are some Infiniti engineers that would like to know about it for their 7AT! I grant you they look nice and dress up the engine bay, but? Any links available to hard facts and not just "it runs better"?

 

You put too much faith in "engineers". They're 100% theoretical, they're not hands-on and don't do any testing to ensure that the materials used are exactly what was specified. They don't work in ideal worlds and honestly don't give a **** about making things perfect. They're happy with functional, which the car is. Doesn't mean it can't be better.

You also have to take into consideration how much money they save by using smaller wiring. Save 5 bucks of wire cost on 10,000 vehicles, and you've saved, Oh yea, 50,000 bucks. That's 100% profit too, no overhead involved in that.