APEXi Grounding Kit (Suggested Ground Points)
08-23-2005, 05:02 PM
#13
Former Moderator
The ONLY way a grounding kit improves anything is IF the original grounds are inadaquate. Which is not a problem on a S2k or most any other modern vehicle. (as long as the are clean and corrosion free) To restore a corroded ground, clean it. Don't add 15 new cables. I'll wait for an EE to post a long winded explaination of why the only thing your grounding kit did was empty your wallet.
Dyno proven gain? Under a 5hp gain is acceptable dyno error. And easily fudged with a correction factor. You could have the same performance edge by eating a light lunch. Of course you car now weighs more with it's multiple ground wires.
08-23-2005, 07:43 PM
#16
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Originally Posted by Slows2k,Aug 23 2005, 05:02 PM
The ONLY way a grounding kit improves anything is IF the original grounds are inadaquate. Which is not a problem on a S2k or most any other modern vehicle. (as long as the are clean and corrosion free) To restore a corroded ground, clean it. Don't add 15 new cables. I'll wait for an EE to post a long winded explaination of why the only thing your grounding kit did was empty your wallet.
Dyno proven gain? Under a 5hp gain is acceptable dyno error. And easily fudged with a correction factor. You could have the same performance edge by eating a light lunch. Of course you car now weighs more with it's multiple ground wires.
As for emptying my wallet, i got the ground wires for free as a present.
There are gains of more then 5hp with grounding kits on the same car, tested on the same dyno.
Like I said, if you haven't tried it on your car, or tested it, then you probably shouldn't be passing judgement.
08-23-2005, 07:50 PM
#18
Former Moderator
I guess I'll just have to live with having lightweight effective grounds instead of a maze of heavy blingy ground cables.
I've had plenty of trips to the dyno. If insufficient grounding was an issue, my car wouldn't run, niether would yours.
I've had plenty of trips to the dyno. If insufficient grounding was an issue, my car wouldn't run, niether would yours.
08-23-2005, 09:25 PM
#19
Registered User
maybe he doens't understand the concept of "dyno proven".
when you're trying to dyno to prove such small gains, most people don't really do this right. first, it's best done on a dynapack dyno, or even better, an engine dyno, to eliminate as many other variables as possible.
THEN, you have to monitor coolant temp, air intake temp, timing, etc.
THEN you have to get at least 3-4 baseline dynos. why? because even your baseline dynos could have 5-10whp difference.
Now, install the mod.
THEN you have to repeat the procedure all over agian, getting the air intake temp, coolant, and timing all at the same values.
AND you have to dyno 3-4 times again to obtain the most accurate data.
If you haven't done this, then you haven't proven anything. And companies that show dynos with "5 or 10" wheel horsepower gains avoid doing this specifically. or, what they do is take the lowest baseline dyno, and then the highest "after mod" dyno, and then go "look it gave us 7whp!!!"
I could do the same thing. dyno my car, say max at 202whp. then, install a spoiler, and dyno again at max 207whp. LOOK!!!! My spoiler just added 5 horsepower!!! whoa!
you understand now?
then, aside from all this dyno talk.... Electrical Engineers, such as the ones who are members here, will tell you grounding kits do nothing for modern day cars. Modern day cars have more than adequate grounding, and aftermarket kits provide no gains, nor do anything beneficial for the car.
when you're trying to dyno to prove such small gains, most people don't really do this right. first, it's best done on a dynapack dyno, or even better, an engine dyno, to eliminate as many other variables as possible.
THEN, you have to monitor coolant temp, air intake temp, timing, etc.
THEN you have to get at least 3-4 baseline dynos. why? because even your baseline dynos could have 5-10whp difference.
Now, install the mod.
THEN you have to repeat the procedure all over agian, getting the air intake temp, coolant, and timing all at the same values.
AND you have to dyno 3-4 times again to obtain the most accurate data.
If you haven't done this, then you haven't proven anything. And companies that show dynos with "5 or 10" wheel horsepower gains avoid doing this specifically. or, what they do is take the lowest baseline dyno, and then the highest "after mod" dyno, and then go "look it gave us 7whp!!!"
I could do the same thing. dyno my car, say max at 202whp. then, install a spoiler, and dyno again at max 207whp. LOOK!!!! My spoiler just added 5 horsepower!!! whoa!
you understand now?
then, aside from all this dyno talk.... Electrical Engineers, such as the ones who are members here, will tell you grounding kits do nothing for modern day cars. Modern day cars have more than adequate grounding, and aftermarket kits provide no gains, nor do anything beneficial for the car.
