According to an article in the December 02 issue of Import Tuner pg 76, there is an increase in HP from the earthing system. Here is what the article said:

For the tests they chose five cars that came in relatively common modified trims: a 1997 Nissan Maxima, 1995 Mazda RX-7, 2002 Honda S2000, and a 2002 Suzuki Aerio. They base lined each cae, installed the Hyper Ground System, and then made another dyno pull. Each and every car showed some kind of improvement, some cars more than others. In some cases, they had to change the locations of the grounding points to find maximum performance gains. This was probably because of the cars' relatively mild state of tunng. Both Sun Auto and XS Engineering told Import Tuner that highly modified cars would see even more significant gains in horsepower, because modified cars generally have a greater demand placed on their electrical systems.

2002 Honda S2000
Apex WS Exhaust
AEM Intake
rpm......before......after......gain
2500......47.1.......46.7.......-.04
3000......59.7.......60.0.......0.3
3500......75.5.......75.7.......0.2
4000......85.2.......85.5.......0.3
4500......92.9.......93.7.......0.8
5000......104.4.....105.7......1.3
5500......120.7.....121.7......1.0
6000......151.7.....151.9......0.2
6500......163.8.....165.9......2.1
7000......172.4.....174.0......1.6
7500......184.9.....186.9......2.0
8000......192.2.....193.8......1.6
8500......189.0.....190.3......1.3
avg......1.03

1997 Nissan Maxima
Stillen Exhaust
Jim Wolf Intake
Stillen Downpipe
rpm......before......after....gain
2000......61.7.......63.8........2.1
2500......77.3.......79.4........2.1
3000......92.4.......95.6........3.2
3500......116.1......119.2......3.1
4000......127.4......136.6......9.2
4500......150.1......161.7......11.6
5000......166.0......175.5......9.5
5500......166.7......175.0......8.3
6000......157.8......164.8......7.0
avg......6.23

Sun Overseas Trading, Inc.
714-708-7733
www.sunautomobile.com

XS Engineering
714-698-8300
www.xs-engineering.com

 

I still dont see hows this is possible

 

I don't understand many things about the car. eMail one of the two companies and ask. Worse they can do is ignore you. The answer would make a real interesting post.

Also you can't always believe all you read. But it sure sounds good.

 

I'm just going to say the earthing kit was a solid purchase IMHO. The throttle response has improved and the engine sounds a whole of a lot better all through the range. Noticeable change... smoother acceleration...

I'd highly recommend it

 

Installing mine today

 

All finished...about 1.5 hours for a nice and neat install...

 

Which kit did you buy/install?

 

The one from Sunautomobile in silver.

 

just a quick question how do you know where to ground each wire? thanks

 

earthing kits run a wire to a few of the compoents in your engine bay and return to the negative battery terminal. or where the negative bat picks up from the frame of the car.. usally the compoents ground into the chassis of the car closer to them. as copper is a better conducter than steel or whatever, it gives you a better ground for all the components.

people are using the locations given from the nissan grounding kit.. pics were put up by tako a while ago.

 

Has anyone with an aftermarket stereo installed one of these kits? I bet it would introduce ground loops!

 

"Both Sun Auto and XS Engineering told Import Tuner that highly modified cars would see even more significant gains in horsepower, because modified cars generally have a greater demand placed on their electrical systems"

I smell BS.

Let me shed light on the grounding kit theory:

Electrical resistance = physical resistance in your alternator. So if your engine block is poorly grounded (grounding in this case meaning how well it is wired to your car's chassis- not really a true ground), the alternator will demand slightly more work with each revolution, which is power we'd all rather have at the wheels. So you want to ground your engine block as well as possible, right?

Yes and no. Considering it takes many thousands of volts to arc the spark plug gap, and you're losing an infinitesimal volt fraction in a "poorly" grounded engine, a grounding kit will benefit your engine on a scale that only quantum physicists will care about.

When the stock grounding wire is perfectly capable of channelling a bolt of lightning, I'm skeptical. Import Tuner isn't the kind of rag whose results I'll trust. I need a wealth of evidence beyond reasonable skepticism and any possibility of placebo effect.

 

Something that I just learned from an EE is that the optimum grounding strap should be a braided flat cable, the wider the better, rather then a round cable. Of course this isn't practical in most circumstances.

 

but this isnt just about getting the power back so your alternator doesnt have to work so hard,, its also a proper ground for the ecu. using nissans whatever system that they like send multiple part's signals back to the ecu sharing a single wire... i think it becomes more imparitive to have accurate readings.

if you've ever dealt with camera systems or whole house audio youd knw this as well.
for instance say you have 4 cameras on the exterior of a house you run your wiring rg6 + a 18/2 for power back to your modulator.. you plug all the rg6's into your modulator and put transformers on all of your 18/2 and plug them in.
oh wait my picture on the camera's is slightly snowy whys that?
everyting is terminated correctly. no interference on the line due to powerlines or anything (not major) but still snow
unplug the transformers and plug them into a powerstrip w/ the modulators xformer and the snow goes away... whys that? the grounding on teh circuits is much closer and the bad ground introduces interfenernce to the signal... now lets see its all coper wire and even if the other outlet was on a seperate circuit that still means that the coper runs back to your breaker and then grounds into the bar crosses circuits and flows back up to the outlet the modulators on... all coper all teh way.. so whers the difference? its in the natural resistance to a flowing current in the wire.

same deal w/ the z the chassis will conduct electricity. but not as efficiently as the shortest ran path w/ puregrain copper wire back to a shared grounding point

i dont belive its bs, i just cant believe that it really makes that large of an effect... but then again the ecu is a pretty sensitive piece of equipmnt