Morning, what eiraku experience is not some placebo or black magic voodoo or whatever. It is really real positive effect felt.
A good stable voltage and current flow plays an important role in car performance. ECU as we all know, reads, digest many parameters and decides what is the performance level a car can obtain. the car's ECU is highly dependent on all sensors to provide accurate data and signals. the ECU can provide the best judgment if the signal is accurate. hence a stable & consistent electrical system will ensure optimum torque and response at all time.
even though a car may have very good flow of air, exhaust, hi power iridium sparkplugs or so many mods, if the ECU detected instability in current (poor current flow or grounding, increase in load usages, or other factors), ECU will not select the most optimum performance. ECU will select the best ignition if good stable current is detected, granted all other equipment in the car is performing at optimum condition.
I can vouch to Eiraku that the engine response and power is contributed by the VS and grounding. but modded air flow holes will work hand in hand to suck air faster thus also contribute to better response.
but of course la u dont expect this mod will transform your car to a turbo powered car. if u want put BOT la.
the problem is so many VS in the market and so many people can do grounding.. the question is, does the VS really works? and do they know how to properly install grounding cables n selecting the positions? are more grounding cables yields better performance? how do we know the grounding cable is good in quality ? these questions maybe the answer to some of friends which feels that vs and grounding is such a waste and no performance gains. my IMHO...cheers ...
Of course we're not expecting a boost in hp by adding VS + grounding. But isn't it funny that car maker didn't include this already? am wondering