Originally posted by Force Fed 23
The only way it would make a difference is on a car with substandard grounding in the first place IE old, dirty, or corroded.
You do realize that all dyno's have a margin of error of at least 1% so anything less than 10hp is pretty much a coin toss as to whether you actually picked up HP.
And finally, I'm sure you also realize that you can't feel HP changes of 10hp or less in seat of the pants testing. So while you guys stick to buying grounding kits, I'll be at home installing my nitrous scented air freshener which should net me similar results.
It will make a diff if the factory grounding points are substandard to begin with. There has been enough dynos on several cars to prove to me that they work, I'm sure after time most people will come around to accepting this. Anyway I'm not really looking to argue about it, if you don't want the extra ~5 HP for $15 or then feel free to not do it.