Have a look at this site and tell me how this can give you more BHP i have been an auto electrition for 15 years and it makes no sence to me?
http://www.kastleskorner.com/store/product_info.php?products_id=316&osCsid=1b84d8c5bd 3f478caa1787c05dfb2774

Cheers Doc..

 

for the lazy

http://www.kastleskorner.com/store/p...1787c05dfb2774

Dan

 

The Earth Mod?

 

Sorry about the spe (electrician!!)

 

it allows a clean return to earth,electricity will always take the easiest route(same principle is used in houses to bond water and gas pipes).diy kits are a lot cheaper and offer the same results as far as i can see

 

? How does give you more BHP
Also if the ground on the car was not good enough ie have resistance in them would they not get warm!!

 

I'm more than a little sceptical about a BHP increase as well (I'm an electronics engineer)

I made up some extra earth cables for my 6 year old Impreza and it idled better and the stereo sounded clearer. That was about it. (All I was aiming for anyway...)

As for wires getting hot, I couldn't tell with the engine nearby...

 

Try star-point earthing you home hi-fi - it sounds amazing. The principal is the same on your car - you're just cleaning up the input and output signals by providing good return paths.

I guess any performance gains comes from more efficient running as a result.

Richard

 

If i provide a stronger earth to a circuit this will make the component more efficient only if the original earth was faulty..
Otherwise what this suggests that the more power you apply to a component the better it works ! So if i fit a 150 amp alternator i will get more BHP ????
I do,nt think so !!!!!

 

that last thread might of sounded like i was having a go sorry

 

I can only reference it to the hi-fi work I've done. Earth is 'common', available to everything that needs it. However, it suffers leakage - suppose a transient peak of 40v on the live pin of a LH channel power cap; a small percentage of this is leaked onto the earth path while the signal is drained away to the main earth point on the unit.

Lets suppose theres a 50mV blip lasting 2ms - this is on the earth path! Now assume the RH channels cap's negative is sitting on a bit of copper track 5cm's away. Whatever the RH channel is doing is affected by the 50mV blip caused by the LH channel - earth is *the* reference point, if it's not accurate then neither is your output.

If you star-point earth these 2 caps, you run separate earth wires back to a common reference point - instead of 5cm's of copper track, you maybe have 10 or 20 seperating them. I *guess* this allows each channel an accurate reference, any leakage is gone before it can affect the other channel. I never tested this theory scientifically - much easier to just do it and listen...believe me, star-point earthing any semi-decent hi-fi will astound you

Applying this to your car, you're just cleaning up the sensor input and output to the ecu - allowing everything to run more efficiently (including the car radio ). However, reading the above properly () suggests this is a 'ring' system - making it next to bloody useless *unless* your existing earth system has problems. Even then, bypassing this with new cabling is actually dangerous unless it can pass as much current as the original should have been able to (don't know how many amps the alt. draws while turning over - enough to fry most of the 'earth kit' wiring used out there, I bet...certainly mine!). I reference everything back to the negative battery terminal (leaving all existing earthing in place).

Richard
PS: please don't start ripping open your home hi-fi's unless qualified

[Edited by dowser - 12/27/2002 6:35:11 AM]

 

Doctor Clifford,

let me see if I can help.

On a car you the electrical connections are in a harsh environment - heat/cold/heat/cold/oil/petrol/salt/water - so over time is it surprising that earth connections and the earthing wires lose some efficiency.

Lets just say that over time the car loses some efficiency and the sensors and ECU lose their common reference point. The quality earth should give a more accurate potential difference.

Now thing about how accurate some of these sensors need to be.....

....lambda of 0.02 volts off at high boost will give a hugely inaccurate level of fueling!

....MAF works between 0 and 1V on a constantly varying set of steps - these are small voltage changes - something that can be easily effected by a poor connection or a poor ground.

Earthing the block and manifold better (where most the sensors are) and the ECU chassis will give a far better quality PD.

As you say this improves your idle and makes the stereo sound better - it almost certainly improves the ignition and fueling accuracy - so you probably get a small handful of extra BHP - which of course would be hard to measure!

Trout