the second DIY thread i linked above already has all the measurements done for you.

if you can't make you own grounding kit, you probably have no business installing a pre-made one anyway.

 

agreed

 

But still, if I put a big turbo on an engine and it will brake down, is it then a bad engine? More or less the same with the radio example, that the factory doesn't calculate the wiring being used for a HU with RCA cables is a way of engineering and not delivering a bad product.

 

Can someone explain to me the relation between ground cables and the smoothness a gearbox is changing gears?

 

better/cleaner signal from the TCU?

i didnt notice any trans difference - i did it mainly for audio reasons.

 

When I did my grounding kit I took a before and after video and compared the time difference between when the gear number changed on the LCD screen and when the revs dipped. All the shifts were about .6 seconds although with the kit I had a fast .4 sec and a slow .8 sec shift. Even though I was skeptical about the grounding kit, it did "feel" better after installing. I'm going to have to take the kit off later this week so I can look again at shift times without the kit.

 

Huh? I never said either were a bad product. Bad design maybe, but product, no.

 

If this is for audio purposes...why not just do a better grounding job on the audio install rather than getting a grounding kit for the engine bay? What am I missing here? I dont think the kit that goes in the bay has anything to do with the radio and how it will function

 

Wrong. A system can only output from what the ground is. If the ground is insufficient, the power will only match what the ground is. Amperage will increase with a better matched ground.

In car audio, we run BIG 3 (it may be big 5 now or something). Essentially grounding the battery to the engine, and chassis, and positive wire ran directly to alternator. How To Perform The Big 3 Upgrade | Learning Center | Sonic Electronix

A little overkill for this purpose though. I think 2/3 big 3 will suffice for audio. Wheelhouse

 

i did both. what good is proper grounding in the trunk if theres a poor connection to the battery? it all goes back to the battery's negative terminal.

 

OK. I just have never had an issue so I was wondering why this was such a thing. This car has nothing done to it, but my last car never had any grounding issues

 

you may not have any issues. it can only help, though.
better, cleaner signals from all the electrical sensors is always a good thing. make some extra ground wires yourself for $20-$30 - dont waste money on a pre-made "kit".

i replaced ground straps and cleaned ground points all over my Porsche 928 ... what an electrical nightmare!

 

That was an 80's car...most of them were electrical nightmares! LoL

 

wow what a damn rip off. i know in the op the guy said he doesn't want to make his own but holy krap $132 for a couple of grounding wires. i rather save the money and make it myself.

 

Yeah no dice on those lol