Grounding Kit Points and Results

[sdfontanini]

Installed a 7 point grounding kit on my car last night, and the results are very positive.

Car seems to shift smoother, idle better, and throttle response when engaging 1st gear is a night and day difference. I can't tell you what a difference this made for me. I would have paid $100 or more dollars for these results. Instead I only spent $40 worth of 4 gauge battery cables at Autozone...

After the installation I also noticed that my Voltmeter didn't jump nearly as much as before. I'd dip into the 12v area before when I had huge bass, but now it hardly breaks below 14v.

Here's a layout of where I made my "connection points" - all 10mm bolts



1 - Negative Terminal on Battery
2 - Stock Grounding Wire Location on Frame, you'll see the stock wire run to the intake manifold
3 - Metal Wire Harness. Put one lead under the harness and one above.
4 - 10mm Bolt located just right of the headlight.
5 - Grounding Wire location, this 10mm bolt has a metal harness attached to it.
6 - Grounding Wire Location on Intake Manifold - Pretty obvious
7 - Tranny - One unused hole where a 10 mm bolt can be attached. - Isn't pictured but you'll see it.

[Warrtalon]

Agh, I know you just got the Evo, but you're going crazy. They are fool's gold kits. If things improved, then you had a short somewhere. These are things people used to do when the Evo was new, but not so much anymore, because peope know they are useless - it's just a $5 solution that costs $100 or so and really makes the engine bay uglified.

I wonder where your short was or if it's been fixed or masked.

[sdfontanini]

Well I did this on my last car too, and I noticed a definite improvement in throttle response and shifting. I know this is a love it or leave it type of mod, but don't knock it until you try it. I'm sure I had some sort of a short somewhere, where that might have been I have no idea. I'm guessing my sub located in the trunk had something to do with it, but I'm not going to pay some technician $100 to fix it for me when I can spend $40 and do it myself.

Really though, $40 for an improvement in throttle response is well worth it in my opinion. I know guys who spend hundreds of dollars for 5 hp. I feel it's money well spent. and wouldn't own another car without a grounding kit.

Lastly, have you ever looked at the stock grounding kit? It's like 16 gauge wire, that ain't gonna do a great job, it'll be sufficient, but there's room for improvement. Uglified, you can hardly tell it's even in there. I used all black wiring. The only indication would be the leads coming from the battery.

To each his own

[Brembo]

Hold on, your started to shift beter after this? Can you explain? I am a little confused here.

[BoostINuRi]

He's in the zone....Autozone

[Coevopower]

Yes. How did you start to shift better? A manual Transmission has very few electrical circuits

[sdfontanini]

Car's throttle response in the lower rpms seemed to improve , making my shifting smoother to first gear. I had issues revin to 2k, releasing the clutch and an almost instant drop in rpms. 500 or more. Not a huge issue when you're in 2nd and above but in first it's a pia.

[Coevopower]

Hummm, Well As long as it helped, I just dont understand how tho. but if it did then thats good.

[sdfontanini]

I'm glad it helped too. Here's what I know about the benefits of a grounding kit:

Fluctuations in signal are due to noise and resistance in the system. Noise is generated by spark plugs firing, discharges through the tires to the road, alternator turning on/off, etc. Grounding kits allow for cleaner transfer to the ECU and results in more accurate performance. Stock Grounding points do work, but can degrade over time. When you begin to add in more electrical components to your car, the stock grounding points become less effective and create more noise.

- Reduces Electrical Noise, which can interfere w/ the ignition, distributor, etc.
- Helps minimize inefficiency and power loss, allowing engine to perform optimally.
- Voltage Stabalizer
- Provides cleaner data transfer to the ECU
- Improved timing and voltage pulses to the fuel injectors.

Import Tuner showed a 3 hp gain on a 300ZX NA using an A'PEXi ground kit.
A'PEXi Grounding Kit Results




I'm still in the process of connecting points to both the distributor and the individual coil packs. We'll see if this provides any additional benefits.

Like I said before, for $40 you can't really loose out on this.

[Coevopower]

But in the end it all comes do to if u like it or not.