k270kmh - I believe that this box is safe. I doubt it could do anything to harm the motor. I also highly doubt that the company would guarantee me 12WHP with the mod... How would I prove it? Dyno before and after? They could argue that the dyno was done on a different day or different dyno...........

 

ex-honda is kinda going into detail what i said earlier... but its still questionable if the evo needs such an efficient grounding as this... i mean to gain 8-10whp means this is a major bottleneck for the evo, almost as much as freeing up the downpipe? hmm i dont know, im abit skeptical

 

i dont know about 8-10 whp but if the company can guarantee me 5whp difference on a dyno, then i'll consider

 

mifesto - I agree with the downpipe analogy. I doubt this gives better gains than a downpipe.........5WHP for $150 would be worth it tho. only $30 per 1WHP!

 

We all could look for dyno test inside internet. Maybe some Honda, Nissan owner already did a dyno test...
I'm going to look for this information right now

 

Let us know what you find!

 

Check this out...http://www.automotiveforums.com/vbulletin/t149285.html

 

hmm!
at least they got their $$ back

 

i bought the Hyper Voltage System, it work great. i felt my car have more torque and pull a bit harder at topend. it won't give you 12 whp, i felt like it give 4-10hp and 3-6 more torque. I read couple review of this product from Asia car magazine. it average give any car 4-7 more hp and 2-5 lb torque.

 

a placebo, you may not feel the 4-7 hp gain if its a total gain but you may feel alil more HP or torque if its low end.... someone on the other forums said they took it apart and found the box just contained bunched up wires...

then again i bet the same dude didnt know a capacitor is basically a bunched up wire kinda like your kidney is really just made of coiled blood vessels but still has a unique function that a normal group of vessels cannot do....

 

what about the apexi one...it gives prob the same power and its 179 here...

http://www.hopupracing.com/apsugrsy.html

 

now the question that probably everyone has in the back of their mind, or are tired of hearing... will this void Mitsubishi's warranty... everyone knows that Mitsubishi makes one for the Evo's, yet... will an aftermarket grounding kit void it?

 

not worried about the warranty...i wonder how the apexi unit compares...its a better known brand here in the states...anyone have it? a couple whp for under 200 works for me

 

some big things mitsu warranty will attack is aftermarket clutch and boost controller..... they often times ignore the other things (ex: exhaust, intakes, grounding kits, rims)

 

Hello,

Speaking as an Electrical Engineer with just a tad of 'car' tuning experience, I think the grounding box does this...

Provides a 'smooth' path to ground which helps the noise factor on a lot of sensors. Computers like 'predictable' sensors. The capacitor stores a bit of charge which probably helps filter some of the strong DC current pulls a typical car goes through. Where do these DC currents come from? The injectors for one, electric fans second.

Another factor in a modern computer controlled car is by stabilizing the incoming voltage from the alternator the fuel system, doesn't have to compensate for fluxuations in current draw at the fuel pump and can fuel the car more consistently. Most 'good' systems will actually adjust the duty cycle of the injectors a little according to the voltage the fuel pump sees.

In general, electronic consistency means scratching the last bit of power out.

Would I personally get a grounding kit? Probably not until I got another computer (or flash), nice blow-off valve, a set of nice gauges, and some coil-overs.

Good Luck,

jcnel.