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Grounding systems, worth it?

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926 views 7 replies 6 participants last post by  rogersampson  
#1 ·
Just trying to gather info on all the grounding systems out on the market.
If I remember from way back I did see a post on here where someone made his own system for the R. Any advantages or is it a silent thing that when it works you really wont know it.

Thoughts?
 
#5 ·
It really depends on the car.

*edited for clarification* :

Cars with anything but horrific grounding will most likely not see any benefits.

Other cars, such as the Mitsu Evo VIII can see up to 14 HP at the wheels with a really elaborate grounding setup.

Brice's (Svenske/Alamo partner) own personal EVO (600 Wheel HP) showed the above 14 HP when installing the grounding kit.

Others he's installed it on (S2000, for instance), showed ZERO gains on the dyno.

I think the question won't be answered until someone tries it and we find out
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Modified by Svenske Racing at 7:22 PM 3-26-2005
 
#6 ·
Re: Grounding systems, worth it? (StaggRLee)

Unless a car has a very under capacity ground side of the electrical system I don't think you would see much benefit. Now the R does have a lot of "computer power" but I don't believe it draws much electrical power.
With to days cost saving measures that car manufacture use, if they can reduce the wire size by one gauge, it is a significant cost reduction.
 
#7 ·
Re: Grounding systems, worth it? (Our R)

Let's examine what electron flow is associated with the motor..

1) the power required to generate a hot spark
2) the power to run the ECU(s) and control modules
3) current flow associated with various sensors and actuators

1 is by far the most critical in terms of amount of energy and direct relationship to HP.

2 & 3 will only have an effect if there are sags or transients on the asscociated lines.

1 is typically only affected by simple voltage drop in the + or ground paths. Neither of these are hard to engineer in the first place so an improvement is hard to imagine.

2 should not be an issue as any ECU or control module typically has many allowances for voltage sag via regulators etc.

3 when properly engineered, the sensor should have its own ground wire to the associated module.

Volvos appear to do well on 1, 2 and 3.

As an EE, I have a hard time imagining where a decent gound system would improve HP on a stock car. The mods we have been making on R engines would not require such a ground device or system.