Ecco un interessante thread apparso su Rush Terios Club, l'iper-attiva comunità di utenti Terios e Rush prevalentemente localizzata in Malesia e zone limitrofe.

E' da un po' che questa faccenda del grounding va avanti, ci sono molti post di utenti che hanno riscontrato benefici sul Terios, qualcosa di vero sembra effettivamente esserci.

Che ne dite di discutere e valutare questo tipo di modifica ?

INTRODUZIONE:
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Qual'è il concetto del sistema di messa a terra ?
Normalmente, la corrente elettrica si propaga dal terminale positivo al negativo attraverso la carrozzeria/componenti dell'auto. Le varie viti, bulloni, saldature mettono in conduzione gran parte dei componenti della vettura. Questa conduzione non è ottimale e si ripercuote sul rendimento delle parti elettroniche ed elettriche.

Una messa a terra efficace consente la massima conduzione con la minima resistenza.

Immagine del concetto di Grounding:


BENEFICI:
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- Avviamento del motore più rapido.
- Stabilizzazione del minimo.
- Migliorata risposta dell'acceleratore
- Aumento di potenza
- Aumento di coppia ai bassi e medi regimi
- Riduzione dei consumi
- Gas di scarico più puliti
- Migliorie nel rendimento di luci e impianto radio

IN COSA CONSISTE LA MODIFICA ?
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Utilizzando dei cavi elettrici e dei faston, si collegano i principali componenti dell'auto (corpo motore, cambio, alternatore etc.)

Esempio di montaggio 1:


Esempio di montaggio 2:


Vorrei postare più link, però attualmente il mio profilo del forum non mi consente di inserire link html, devo superare i 30 messaggi...

Post originale in lingua inglese:

What is the concept of Earth Grounding System?

On a normal system, electric current flows from a positive terminal to a negative terminal through the car body. But there are much resistance at connectors of body, engine and transmission. The resistance disturbs this flow of electricity to a degree that electrical components such as computer, lamp and spark plugs cannot perform at their peaks. In order to get the highest performance out of any automobile, it is necessary to achieve a maximum electricity flow with the least resistance along its electrical circuit. In short, a grounding system does to your electrical circuit like a high performance intake & exhaust system does for the gas. We believe such system is the basic of all tune-up if you want to unleash the maximum performance of your car.

What does the Earth Grounding System do?

Earth Grounding System can achieve an extreme improvement on electricity flow and stability by providing a direct ground path from the body, chassis and engine components to the battery negative.

Its effect on automobile has been proven by dyno tests again and again.

What benefits does it provide?

1) Faster engine start-up You can feel the difference even with A/C on and at maximum fan speed. This system reduces the loss of electricity to nearly zero at ignition coil and produces better ignition spark.

2) Stable idling: You will hear your car engine noise quieter than before. - Smoother and faster throttle response The upper green lines in both charts below has the Earth Grounding System installed. They indicate a higher torque & horsepower gain. Car used for this dyno test was a Lancer Evolution VI. A max. horsepower gain of 5hp and up has been achieved on a Honda Integra TypeR.

3) Increase low & middle engine torque: It helps to achieve a close-to-perfect combustion at low or high revolution of engine, resulting in faster acceleration. A max. torque gain of 0.5kg-m and up has been achieved on a Subaru Legacy BH5.

4) Better CPU Operation, Better Mileage: In particular city driving. So this system does not just save you money on gas, but very ecological, too. One test even shows an MPG increase of up to 22% on a 1800c.c. test car.

5) Cleaner Exhaust Gas: Lower density of HC and CO. - Brighter headlight output Improvement that you can see. Thanks to a better alternator performance. - Improve car audio sound quality Improvement that you can hear. Thanks to an overall enhanced equipment performance including but not limited to: Car audio, power windows, power sunroof, etc...

Decide where the contact points for your vehicle are:

- Use the instruction that comes with the Universal Kit or use the following three examples for reference. Locate your contact points and decide how many you would like to use. The more contact points that you use, the better conduction your vehicle has. The norm is anywhere between five & ten contact points. When in doubt, use our suggested Example Three below.

Suggested connecting points - Example One
- Cylinder Head = Engine Block
- Distributor = The part which separates electrical power into each plug
- Bulk Head = The iron wall between engine bay and car interior

Suggested connecting points - Example Two
- A = 1st body earth for electrical parts
- B = 2nd body earth
- C = Engine block
- D = Throttle body
- E = Alternator
- F = Battery negative terminal
- G = 3rd body earth
** Please click on the above image to get closeup views of each portion.

Suggested connecting points - Example Three (Recommended)
1) Engine head near spark plugs - better spark plug performance
2) Engine head near stock earth wire - better injector & ignition coil performance
3) Near alternator - reduces power loss
4) Near cell motor - quicker engine start-up
5) Stock body earth cable for electrical parts - electric parts perform better
6) Stock body earth cable near battery - enhance general stock body earth conduction

* As you see, there can be multiple connecting points per major component. You may be creative & connect up to TEN points. Anything beyond that will yield only minimal improvement.