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  #49  
Old 09-24-2012, 02:00 AM
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Re: Apexi super voltage stabilizer 5.7

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Originally Posted by griff1455 View Post
I do have it all installed now, as I mentioned earlier, and a quick drive did appear to provide a smoother idle, better and faster throttle response, smoother and more responsive shifts, etc. However, I will await some readings before making any claims for certain. I have it set up that I can completely disconnect everything for some before and after scope readings. I just need to figure out the screen captures on my new toy.

Stay tuned if you like .............
Just be aware of the placebo effect. No doubt you know that cars always run better after being washed. The only way to take the psychological component out of this is with data, as you are attempting to do. You will have to measure and document both noise and some performance criteria and repeat the test enough times to establish a direct relationship.
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  #50  
Old 09-24-2012, 09:10 AM
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Re: Apexi super voltage stabilizer 5.7

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Originally Posted by griff1455 View Post
I completely agree with you Doc.

The +12v at the battery is very noisy. I tapped into a +12v line at the ECM and found the same level of noise, but I am unsure if that was a supply line or an output since I don't have a wiring diagram and I know that the ECM has some power filtering built in. WIth the mock up, everything was much cleaner.

I have it all put together and installed now. I just need to get the micro SD card for the scope screen captures and then I can show the before and after shots as well as some detail on the project complete with pics.

I want to be very clear on my theory as well as my expectations. Something like this should do ABSOLUTELY NOTHING for a brand new vehicle. For a vehicle with some age, I suspect that there should be some improvement. An engine and ECM design will only produce X amount of HP and torque. Yes, you can introduce mods and gain on both, but you cannot "magically" increase either without some effort. Current technology in fuel injected vehicles rely heavily on sensor feedback for proper engine management. It is in this area where my theory lies as well as the "statements" made by the suppliers of devices like this. A dirty or noisy power supply or a bad ground, or the combination of both can produce inaccurate or variable sensor readings which in turn provides less than peak performance signal feedback to the ECM. This is the reason that the grounding TB mod seems to work (I suspect that this particular mod would work on even a new vehicle since the TB body is ground isolated and probably builds a static charge which can impact the internal electronics on the drive-by-wire configuration).

Clean and stable power and ground will always enhance the operation of electronics, even in a modern automobile to the point at which they were designed (not beyond it). Noise can be introduced on either the power supply line or through the ground.

My reason for conducting this experiment in threefold: 1) To prove that these devices do provide a benefit, but only by restoring proper sensor operation in a vehicle that contains electrical noise, not by "boosting HP" above what the engine and ECM design will provide with or without mods) 2) To prove that the claims of the suppliers of these devices are somewhat misleading but do carry a hint of truth. I would be much more a believer of their advertising if they stated that there would be no benefit in a vehicle that did not have electrical noise. I also think that the cost is absurd (I have about $60 invested in parts). 3) If proven, then I have a solution and will readily share it with those that have an interest. If not, then lesson learned and had some fun.

I highly doubt that the big 3 would have an interest unless it were proven that they would save big $$$ on warranty work that they are currently paying out due to damage from electrical noise. Almost an impossible task since that type of data is highly confidential. Besides, they rely heavily or degradation of vehicle performance over time to stimulate repeat business.

I do have it all installed now, as I mentioned earlier, and a quick drive did appear to provide a smoother idle, better and faster throttle response, smoother and more responsive shifts, etc. However, I will await some readings before making any claims for certain. I have it set up that I can completely disconnect everything for some before and after scope readings. I just need to figure out the screen captures on my new toy.

Stay tuned if you like .............
Certainly will be following this!

It's interesting stuff. I think your framing of things is right on - when a vehicle rolls off the line, the manufacturer has designed the electrical system to run as efficiently as is required to get the most out of the systems. Over time, as corrosion, heat-cycles, vibrations, etc., all take their toll on the vehicle some of the systems may no longer operate as originally intended. By installing further power conditioning systems, some of this degraded performance can be restored. That I could believe, and I look forward to seeing the scope read outs.

Great stuff.
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  #51  
Old 09-24-2012, 09:21 AM
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Re: Apexi super voltage stabilizer 5.7

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Originally Posted by BobT View Post
No doubt you know that cars always run better after being washed.



To add another source of human error in reasoning, I remember an article I read when going through university dealing with cognitive dissonance resolution. Basically, if you had two groups of people and had them listen to the same boring presentation, but had one group PAY to buy the tickets (nothing big, like $5) and the other get to listen for free, guess what happens...the group that had to pay consistently rated the presentation as better than those that did not. They said it was great, and worth the money. The group that saw the identical presentation for free said it was a waste of time (of course, paraphrasing the results).

Identical speech, but if you pay you like it more. The reason for this is we don't want to feel like we spent money/effort/time/etc without benefit to ourselves.

Now, I am not saying this is the case here, but I could certainly believe laying out $300 for a piece of electronics equipment certainly introduces a lot of cognitive dissonance...
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  #52  
Old 09-24-2012, 10:17 AM
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Re: Apexi super voltage stabilizer 5.7

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Originally Posted by dr.lee.baugh View Post



Identical speech, but if you pay you like it more. The reason for this is we don't want to feel like we spent money/effort/time/etc without benefit to ourselves.

Oh you are striking with pin point accuracy!! I could go on and on about media influence over the masses, retail marketing strategies to induce impulse purchases, the effects of color on the human mind, etc. Human nature is quite the interesting enigma. But I digress.

Btw, my WK DOES run faster after washing due to a much lower drag coefficient from the removal of crud! LOL
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  #53  
Old 09-24-2012, 08:54 PM
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Re: Apexi super voltage stabilizer 5.7

Love this! Real info not "butt dyno its bigger/louder and I spent a bunch of money so it must be faster" bull$h*t.
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  #54  
Old 10-04-2012, 09:19 AM
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Re: Apexi super voltage stabilizer 5.7

Any more updates on this? Curious to see the results.
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  #55  
Old 10-04-2012, 11:39 AM
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Re: Apexi super voltage stabilizer 5.7

Not yet. I had a brake upgrade, TB, and some engine bay dressing get in the way. I still need to get a new SD card, hopefully by this weekend.
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Old 10-05-2012, 10:19 AM
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Re: Apexi super voltage stabilizer 5.7

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Originally Posted by SweetWilliam View Post
Love this! Real info not "butt dyno its bigger/louder and I spent a bunch of money so it must be faster" bull$h*t.
It is not bigger, louder. That is what people who put on CAI and catbacks think makes it faster, when it makes it slower and drive worse than stock.
With the Apexi, it is much quieter, smoother, faster, with immediate throttle response, ZERO lag, far better than when it was brand new. I do not care to waste time and money on a dyno, as I know how much better it runs, and could not care less what others on a forum think. I was trying to help people here, but instead of listening, everyone argues. I am done posting on this topic.
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Old 10-05-2012, 10:23 AM
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Re: Apexi super voltage stabilizer 5.7

do you have the schematic for the home made one and a parts list?
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Old 10-05-2012, 09:00 PM
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Re: Apexi super voltage stabilizer 5.7

Here is the document that I used. This is a word doc that I zipped up. If you can;t grab it, PM me with your email addy. I added a ground bus and basically grounded both fenders, ECM, Front clip, TB, Block, and have a spot left on the terminal black for the tranny.

I promise I will get pics and oscope readings up, time has not been my friend lately.

I can say that I have noticed a definite improvement, but I have also been doing a lot of work on her lately. I can only confirm with the oscope readings. I am beginning to think that the ground bus is more important that the power filter, but this is just another suspicion.
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  #59  
Old 03-17-2013, 04:59 AM
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Re: Apexi super voltage stabilizer 5.7

any progress with the pics?
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Old 03-20-2013, 05:26 PM
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Re: Apexi super voltage stabilizer 5.7

Dmsfun.
Thanks for the post, i reminded me i had one off these gadgets. This was sent to me from a buddy in Japan.

l installed it in my 2005 5.7 with 200k km yesterday and then went on a 330km trip. This is what i can tell you.

1. Drives and shifts smoother through the gears.

2. The mds stays on-off for longer periods and the transition is smoother

3. It stays in top and overdrive for longer periods, before the slightest and i mean slightest change of incline, throttle position would make it change. to the point of being so annoying i would leave it in forth

4, increased mpg.

Off the 1st three there is absolutely no doubt. The only way i can describe the change in smoothness is a bit like the difference between iridium plugs with 40k km on them and brand new recommended plugs.

The only one im slightly sceptical about is the mpg. The 2 mpg improvement on this trip i got being all attributed to the gadget is doubtful. Most off that i believe is down to the fact its warming up here, i didn't have the heater cranked, wipers on and rear demist on all the time. Some maybe but not all.

lm happy.
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