Check out April 2003 Turbomagazine Issue on page 86
http://www.sunautomobile.comGrounding will added up to >0.1 - 1+HP depending on your existing ground + EMI noise in your car system.
The ground in your car, as it age, are not very good.
Because all cars now have electronics, the tolerance for interference is very high and you can have electronics not operating withing its tolerance.
Thoses CBers, Audio enthusiast know what I am talking about.
All components is grounded to the car frame. But look where the bad grounding comes in.
Now since all grounds are attach to the car frame, you only have 1+ grounds connected to the engines mass structure which is not a very good conductor all round since there are many electronics points and plate connections.
If is was all one blob of aluminium or steel or iron, then everything would be good.
So by using properly low resistance, EMI reduction wires, then you move toward a large mass grounded structure since you have the engine grounded at critical points.
This mean that full power will be supply to spark plugs (low resistance ground) and reduce EMI in the system. (which is feed back to the ECU)
Also, please note that a DC meter cannot measure a ground properly.
In a DC enviromnet, it is ok. But we are in a different environment. That enviroment consist of AC (Alternating Current) which is very sensitive to impedances changes and EMI noise. This impedance changes affects performances (sensors changes their characteristics a little bits, which the ecu have to compensate for).
This is why you have plug wire made to reduce EMI, spark plugs with resistors built in and shielding for sensitive equipment.
To summarise:- Adding HyperGound cables will increase HP+torque by a marginal amount depending on the number of cables use and where the those cables are attach to and how bad your ground system is and current electrical load (highly mods cars).
If you like, we can going into discuss on this latter.
This post has been edited by west_minist: May 25, 2003 - 10:19 PM