^^ you liar! The picture clearly states 14.13!!! Not 14.15 like your lies claim! J/K, good work man.

 

aahaha sorry mistype! it was going between 14.18 and 14.12 so I feel confident saying 14.2

just updated with a diagram of where everything went

 

Nice! That's comforting news to me.

 

Finally some real information. Good work.

 

i know my next modification! ten bucks. not bad at all.

 

I just recently did this.... it helped allot!

 

Nice, deffinitly visiting home depot tomorrow, though I probably could have checked this as well since I have a nice un-opened volt reader in the garage! ha!

 

I had heat-shrink laying around so figure this in for your cost

what is this for?

 

heat shrink is for sealing exposed wire around cut ends

 

and for making it look pretty :naughty: (which was my main reason)

 

Wow very informative. I will being doing this DIY for sure. I wonder how it effects FI motors.

 

now i can get myself some cool engine bling for soemthing that actually works!

however where is the opposing side to this thread.??? where the guy says well it doesnt really help much!

 

Nice writeup, thanks for sharing!

 

Very nice job, very nice write up.

I have to point something out, however. The connections where you ground the paint off the sheet metal are going to corrode again very quickly. You need to use battery terminal grease on all your connections for long term effectiveness.

 

Yup the man its right, make sure you sand the ground spots for each terminal too for better flow.

 

clean your engine bay, man! Damn!

otherwise good work.

 

very cool. I went to a local speaker place, and bought 10ft of 4 gauge wire, and a bunch of terminals. I did a grounds + positive on battery terminal to alt.

my write-up found here : the big "3" upgrade +1 - CTSUBIE.com- Connecticut's Subaru Team

-B

 

very cool. I went to a local speaker place, and bought 10ft of 4 gauge wire, and a bunch of terminals. I did a grounds + positive on battery terminal to alt.

my write-up found here : the big "3" upgrade +1 - CTSUBIE.com- Connecticut's Subaru Team

-B

Good stuff! Thanks for the link. I wonder if I would notice a difference if I used 4g wire. You gained 0.7v and I gained 0.4v with a grounding kit... but I gained 1.0v with all my mods so neener neener haha :blol:

 

so this does what?

 

:bonk:

Are you serious or are you really that dumb?

 

hmmmmmm....

let me rephrase this,

the jump from 13.2 to 14.2, this does what? Is it really that big of a deal/noticeable difference in anything?

 

Low idle isn't really indicative of much, the alternator performs very unpredictably. Rev it up to around 2500rpm for an accurate voltage measurement

To discover how much voltage is actually being eaten up, measure the difference between the alternator and the battery, put the positive terminal of your volt meter on the alternator post and the negative on the postive of the battery. Anything more than 0.5V means you have major grounding problems!

For best results, do this test with all accessories turned on (lights, heater, defroster, etc)

FWIW, the voltage regulator in your alternator is set to 14.4V

 

^^ i'll try the above..

i took my multimeter out of its plastic pack today, the last time i used one of these things was in grade 10 electronics class.. i didnt have a beard back then.

so after a few clumsy pickings i got the following by measuring the voltage across the + and - terminals on the battery

idle cold 14.6

idle warm 14.1

idel warm + every electrical anything turned on and the OEM deck (radio) blasted to full

13.8~9 (kept jumping)

any signs, or is my car in relatively good health?

 

looks good from an objective standpoint but it's really hard to say because your battery could be in better condition than mine and vise versa.

Your car is well within healthy specifications, but it's entirely possible that you'll pick up some electrical performance with a grounding kit, or even just cleaning your stock grounds and 12v leads.

 

looks good from an objective standpoint but it's really hard to say because your battery could be in better condition than mine and vise versa.

Unless you have an extremely unhealthy battery (to the point of trouble cranking), the battery shouldn't come into play when measuring voltages with the car started. The alternator is providing the voltage, not the battery.

 

i have a chart from my data....

I have been very annoyed by my lights (interior and exterior) dimming a good bit when my car is idling, I ran across the "Big 3" on nasioc and decided to try it out to see if i could lessen/eliminate my problem. Well i broke out the multimeter to see if there was a change with the last component installed. results were as follows


the battery only didn't change so its only listed once (didn't expect it too ether)

the Big 3 consists of:
1. Additional Engine to Chassis ground wire(s)
2. Additional Chassis to Negative battery terminal wire(s)
3. Additional Alternator to Positive battery terminal wire

The ground kit i made really heavily hit on points 1 and 2 but i completely ignored number three as it never crossed my mind.

I used the "ground" wire from my amp wiring kit that i used to make my ground kit from because it was a different color


Got a "Max" type fuse holder from Walmart for $8 and it has a 100amp fuse in it

 

i just finished a semi-light grounding mod

i cleaned all my grounds, and added a line between the alternator ground and the negative terminal,

and one from the IACV to the chassis

my idle voltage is now 14.22

with everything turned on, its at 14.10

3000 rpm + everything on, 14.22~.24


:color:



also the voltage between the alternater + and the battery + reads at 0.06~7, is this fine? or should i add another line there?

 

looks like you gained 0.1v at idle which is measureable... and that's good.

The whole point of me measuring voltage at idle after changing things was just to PROVE that there was a benefit to doing the mods. It wasn't meant to be the be all end all information about exactly how grounding makes your car's electrical system perform better.

 

I hate to bump and old topic but what kind of batterys/terminals is every one running. mine warm only puts out about 9.56. thats pretty shitty :-\

 

Have your alternator checked

 

thats what I figured.