I search to see if anybody had tried this upgrade and notice any difference or advantage. But I found nothing so here it is. I want to know if this is worth $120 upgrade plus $45 for extra long cable since my battery has been relocated to my back seat.
According to XS-engineering they dyno an FD3S with the cable and gained 14hp on the top end.

 

Most likely, you will see results with the wires only because so many 3rd gens have grounding problems. There is no way, however, that this mod is worth the money. First of all, you can probably get the same results simply by cleaning your ground points. If you really want thicker guage grounds though, you can make your own from high quality wires.

 

Thanks guys, I'm really glad that you guys have the answer and suggestions. I save myself money and learned something.........You guys are the greatest....
and this FORUM is the best !!!!!!!!!!!

 

Autozone ..... $3.18 for a 19" 4 guage wire. I noticed a difference in my O2 voltages and the car seems much smoother.

 

What's is the difference between 2 and 4 gauge (stranded copper)wire? And which one of the gauges is better to use going from the ground to my battery which has been relocated to the back seat.

 

A couple of millimeters in thickness. Triple the cost.

Thicker is always better, but there is a point where you get diminshing returns, not to mention the additional expense.

Any multi-strand copper wire (buy it at Ace by the foot) is as good as it gets. Just make sure your terminals are of equal quality copper (Ace again), buff the mounting points to bare metal and use "star" washers on both sides that bite into the metal when tightening the bolt/nut. I always solder my crimps just for grins. Put a little sleeve of 3M heat shrink tubing (it comes in black, red, blue, yellow and white at electronics supply stores) over it BEFORE you crimp for the finishing touch. Slide the tubing over the terminal collar and use a heat gun to shrink it for a tight fit. A flame will do but you have to be carefull not to burn it.

Badabing, you have excellent quality cables for 1/5 what they are commercially sold for.

 

I've went both routes. First time round I went to the car stereo shop and got myself a huge ground from the battery to the car. Made a slight differnce.
Next, I bought the Sun ground kit from Jason (RX7 store) and noticed a LARGE differnce. Cleaned the car up big time. Night and day difference. The kit comes with 7 grounds. As we all know, the stock ground system in the 7 sucks. I replaced the stock grounds as well as adding one from the block to the body of the car. I was skeptical at first, but it does work.

 

Welding cable is as good as it gets for the money , very fine wire, solder the ends. My mechanic makes has own ends to fit , better than bought copper ones

 

i like the kit, for me, my time was worth the cost of having very nice pre-made groud wires in a kit like this...and they are very high quality wires and look great in the engine bay

here is some info i posted:


https://www.rx7club.com/forum/showth...hreadid=164643

https://www.rx7club.com/forum/showth...+ground+system

 

by the way, i am settin my boost controllers so i have not yet seen if its adds HP or top end, but i do think it smoothed out my idle a bit and smoothed out any hesitations, but its still early to tell

 

Those are some really excellent graphics... how did you do that? Really good, you must be a pro.

 

Polarity is the only thing that matters If the positive is fat then the negative should be fat if the positive is skinny and you put on a fat negative your just wasting money.

 

hey ron, thanks, yeah I do multimedia and application development :-)

i just use photoshop, and about 10 years experience (heheheh)

 

I agree, "Awesome" graphics really helps on how to install it properly. Thanks to ya all who posted, very informative and lots of info on how to do it the right way in spending less or more.

 

Nice diagram damian.

I'm going to do my car in a few weeks and that's gonna help a lot!

I'll probably bug you for some tips when i start on it.

Good job.

 

Absolutely, I ordered all my fine copper strand welding cable, and end connectors from McMaster-Carr for about $20. I started with a ground from the passenger side shock tower, over to the firewall, firewall to the UIM and block (under the coil packs), upper block down to the ground under the spark plugs, from the lower block to passenger side body, passenger side body to the battery - terminal. I also added a ground from the alternator over to the body. Overkill.. maybe, but I won't have to worry about good grounding being a problem. The welding cable is just black so no bling-bling, that is what the extra $$$ is for on the Hypergrounds I suppose.

Matt

 

yeah , just let me know.... noticed the bling bling uim in the pic...thats all you man :-)