The title says it all, I have 09 G37xS and want to install a ground kit to make the shifting with paddles quicker and smoother.

So the question is does it actually work on automatic engines? If so, where to buy it other than Stillen who’s charging $130 CAD for wires and how to install it ?

thanks in advance

 

Yes, it helps. But not much
Make sure not to bypass the amp load sensor...

https://www.myg37.com/forums/d-i-y-i...-your-own.html

A throttle body shift kit
And trans tune will help way more
If you're flogging your trans, an external cooler would be nice too

 

I found my trans was more responsive and so was the throttle when I did my ground kit (‘09 G37X) and I also thought the audio was a little louder. I don’t have paddles, (don’t like em) but the shifts are always crisp for me!

 

I recently made and installed a grounding kit (minus the battery negative terminal) and I wasn't sure what to expect. There seem to be two camps on the subject: it works or it's placebo effect.
I actually did notice a slight increase in throttle response and paddle shifting response. Not sure if it's due to the grounding kit, though, or because I did a ecu reset when I removed the negative on the battery to do the install. It has been over a month and the response times haven't changed. I'm pleased with them. Although there is definitely room for improvement. I can say there have been zero negative effects though, so at the very least your wallet will only be $25-$30 lighter.

Where to buy and install? Home Depot, install in the driveway. Seriously though, the DIY on here is very detailed and only consists of measuring, crimping and removing/ replacing a bolt here and there. Nothing else.

 

Snake Oil.

People who don't understand how modern cars function like to feel like they've magically improved something.

For once, I'd like to hear an explanation of how a grounding kit improves anything, and also tell me why the OEMs NEVER do it?

 

Had my car since 09 and never had a grounding kit. *shrug*

 

I had grounding kit on G35. Absolutely no difference, not even a placebo effect, except that I should've probably spent that money elsewhere.

 

Before buying and installing a ground kit, I would simple use some sandpaper and clean the factory grounds.

 

Don't buy a kit, piece together your own. Do the research on here, plenty of members with auto's claiming they noticed a difference. I'm 6mt so I don't have one.

 

Thanks for your reply but how do I bypass the amp load sensor, can you be more specific? I’m planning to build it on my own and I just wanna install with precautions

 

It's a waste of time, money and effort.
Any time you take your car in for service the technicians will laugh at you behind your back.

 

You will see the original ground wire coming off of your negative battery cable going through a black box. That box is a current sensor and allows the ECU to determine the amp load. Depending on load, the ECU has the alternator adjust output. If you follow the grounding kit DIY, just leave out the wire going to the negative battery terminal.
Post back what your results are once done. People who have actually tried it have the most valuable input, in my opinion.

 

Fortunately, I fix my own car and such but is there a specific why so many people are against it?

 

Don't bypass the load sensor, this is why some people get low charging issues...
The stock ground cable is more than adequate.
Simply follow the factory ground cable,
find it's other end and start adding from there.
If you must add a wire the batteries' negative post, thread it through the sensor ring.

As stated above, alll ground points must be against clean bare metal. No rust corrosion or paint. Sandpaper, wire brushes, scuff pads help here.
Dielectric grease (or WD-40) and star washers won't hurt either.

And don't get me started on the differences between Technicians, Mechanics and Engineers lol