I was wondering if anyone has used this? And did it really work. Thanks.



Quoted from APEXi's website:
"We are pleased to announce that during a recent dyno test for D-Sport magazine, the new A'PEX Super Ground System made an outstanding 8.5 horse power to the wheels. Testing was conducted on a 2004 Subaru WRX STi using XS Engineering's four wheel chassis dynamometer. Previous modifications to the car consist of upgraded intake, downpipe, exhaust, and front mount intercooler. Power output was increased throughout the power band with a maximum gain of 8.5hp at 6000 RPM (400 RPM sooner than baseline max power). This test proves the real world capabilities of the Super Ground System."

 

Bump. I personally think this is bogus but someone enlighten me.

 

so let me get this straight, you get added hp just for having your electrical system grounded "REALLY GOOD"? I find that one hard to believe.

 

Ya thats what I thought. I was in a tuner shop not to long ago and he offered something like this to me and I asked him if it produced horsepower and he said it should produce 2-3 Hp to the wheels. Its some wierd ****. I wonder if this is like the tornado

 

The battery ground is almost as short as your forearm with the battery being in the trunk....I really doubt you see any gain..... Maybe it's used on a top secret ground wire only apexi knows about.....

These things are bogus IMO.

 

It not bogus it gives like 50hp to the weels

 

75hp for the v-8 optioned cobalt I bet.

 

You also heard about the ls1 cobalt coming out

 

It's actually not bogus. It regulates the voltage to prevent surging giving your car an even power state through out the powerband. There is another company that did a test on a supercharged cobalt. It smoothed out the powerband and gained around 5-8whp. Dyno proven results.

 

Thank god. An actuall factuall post. Thanks man

 

I got the official memo from GM. During a limited partnership planned with apexi they will come with the supergrounding system free of charge.

Seriously, someone school me on how you can make a chassis ground that is shorter than 6 inches and of adequate gauge "better" for our application. Money is better spent elsewhere.

 

and sorry about whoring your thread allshot. you have a nice car, avoid ricer parts at all costs.

 

I was just curious. I know modern performance usually puts out quality stuff. i trust them.

 

Modified Magazine Page 114, October 2006 issue, did a dyno test on the Evil Auto Style EPS Power Controller on a Cobalt SS/SC. It netted +3whp and +5wtrq all across the power band consistantly. See evilautostyle.com for more info on it. The dyno was done at Tagracecraft as well, and I believe they are one of our sites sponsors.

 

You are the man. Nice info. I dont know if its worth 200 for it though.

 

Personally, I think if you were setting a power goal, and only needed the few extra horses to meet that, then it would be worth the $200. I believe it would probably enhance the driveability of the car as well, and that would be a better benefit justifying the $200. I'm sure the APEXi one is better than the EPS unit, as they do make top notch products. My buddy installed a hyper voltage kit on his Mazda 6 and he noticed the car was more willing to give a smoother power delivery and figured it gave him a couple ponies as well.

 

but how is this going to work being that our batteries are in the trunks? is there one specific for the cobalt s/c?

 

we would be better off having a capacitor in the hood instead of that piece of junk.

 

I myself have take small electronics coures. And with all the different freqencys and so on going through your car they get alot of interferrence. Using the grounding unit you provide extra points of grounding to smooth out theese problems. The more accurate your car can produce signals for the computer to interpret the more gain you will have from your car overall.

This is something that could be done within the build of a vehicle when it is produced. Although its not necissary so why would they spend the time and money.

 

you can have 400 ground points and it can still produce nothing. it is about the quality of the connections. that "super duper grounding device" from apexia doesn't do anything a capacitor style emi filter doesn't do. (actually, that's all it is, with quadruple the price)

those dynos can be junk. i can pull the car on a dyno and get 300whp, put 5-10 psi in the tires and gain 10+whp. companies fudge those numbers all the time, there is a very, very select few who do not

 

so... how would one go about installing this "thing"??

 

haha, have you ever tested using an oscilloscope because i have! It makes a difference! Static noise from other electronics cause interferrence!

In a side note i would only reccomend using the grounding kit if you run independent engine and fuel management systems etc. Otherwise i wouldnt bother.

 

yes actually i have, thanks for caring. and if you actually knew anything basic about electronics, you would understand what i am talking about.

 

Sammy, this test I mentioned was performed by a car mag that even stated they were suspect to it working. They tested it independently a clearly saw the gains across the entire power while the car was cold and again while the car was hot. Let Tagracecraft chime in here as it was done on their dyno. Dynos performed on the same dyno on the same day with the same conditions tend not to lie. It makes perfect sense that all the cars electronics getting a better ground and/or power supplied to overcome the surges in an electrical system will in return give better overall power. Ever installed an aftermarket stereo system with a bad ground, and then regrounded the system with an awesome one. Huge freaking difference in sound quality. Just like a cars computer getting a shitty ground, then giving it a ground that is more consistant and supplies energy when needed will give more power. I'm not trying to argue here, but if the facts are already proven then why ignore them. It was proven on our own damn cars at that for once!

 

i'm not saying a device like that is usueless, i was calling that a useless overpriced device.

why would anyone in their right minds pay $200 when they can get the same thing (a capicitor style emi filter) for $50 or less. that's like paying $150 so you get a shiney empty box with an emblem on it

edit: for the dyno on the same day, same car etc... i can show you dynos that fluctuate upwards of 20whp per run with absolutely no changes done to the car and all done within the 30 minutes of each other. the only way to gauge such a small gain would be with a controlled enviroment engine dyno. hell i bet i could put a fuel tornado on my ss and pull thre times, and come up between the three with a 5whp difference, and we all know it is impossible for the fuel tornado to help our cars out, because of the aftercooler fins