any one on here have a grounding kit on their ISX50?
just wondering if it did anything..

 

I thought about it.

But don't japanese cars have good grounding from factory?

 

Some do. I've never seen an improvement on a new Toyota/Lexus/Scion. If you want to get the best possible grounding, just remove the bolts holding the ground connections and put anti-seize compound on them. It doesn't get much better.

I've seen some Hondas (particularly Civics) that had some of the worst grounding schemes I've ever seen (unbelievably daisy-chained.) It's no surprise to me they'd respond well to grounding kits.