install guide over here:
DIY - Stillen Ground Kit
From that thread there were two comments:
Quote:
Originally Posted by Triple's
Did you notice any improvements from this?
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Quote:
Originally Posted by nogoodname
I'm sure grounding the throttle bodies does nothing... great write up anyways...
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So I made/had 2gauge wires on my last car (automatic, w/ a shift kit in it). I didn't notice any difference. On the 370z, once again I didn't notice a difference. I drove it about 2.5hrs today post install, and car acts just normal. With that said, I didn't expect to feel a difference. I wouldn't say these are cosmetic (although placebo is a hell of a drug
), but more of a 'feel a little safer now that there is more leeway with the grounds'. You may argue it gains 1-2HP, but on a car w/ 300+, you'd never notice that anyways, so whats the point in arguing it.
As for grounding the throttle bodies... I just did what the instructions said, but you do make a good point. On every other ground point, your increasing the size of the wire, but there is no ground on the throttle body itself. So, you make a good valid point, I didn't even think about it when putting them on. It could be argued that the entire engine is conducive so your just strengthening the ground of the motor in general. I'm not sure if there is a good metal link from the throttle body to the rest of the motor though, and it wouldn't be worth the time to get into anyways.
I can't tell from 2theextreme's pictures, but his may not even go on his throttle body. You can also note that some of his end points are in different locations. This isn't exactly a very specific science like say a turbo is