Did the "big 3"....it's incredible

[jj4475 10+ year member]

The local shop here has been there for 25+ years. There prices are pretty funny. I asked him how much would he charge to do big 3 on my car if I have my own wire and they both looked at each other and said whats that. I said just get rid off the stock wiring and he said no we dont do that lol.

 

[smoke68_61]

I performed the big 3 on my 300zx tt and the results amazed me. Before I was running one Alpine MRD-M605 (driving two Kappa Perfect 10's at 300w each) and one Alpine MRV-F345 (driving some cheap sony 4-ways front and rear) . I switched to two Alpine MRD-M605's (driving RE SE 10's at 600w each) and one Alpine MRV-F545 (driving PG RSD's active w/o rear fill). I also added an electric fan from my clutch driven fan.
My voltage used to drop to 13.2v at the ECU and 12.3v at the amp, which was bad because my amps wattage drops as voltage drops. So I was NOT making the power I thought I was. Now, running the stereo full tilt, at idle, with the headlights and fan running I am measuring 14.1v at the ECU and 13.6v at my amps.

It is night and day difference. My car also turns over faster and easier on the original 17 year old starter.

How did you get to the alternator? I have a 1990 300zx and it looks like it is going to be a ***** to get to it.

 

[Jared530 10+ year member]

Yea I notices a pretty big improvment when I did it also. less electrical resistance

 

[Injected54 10+ year member]

nice, glad everything worked out for ya.

 

[Fusion_FREAK 10+ year member]

Sweet, I did mine in 4 gauge, and my lights faintly dim, but I am going to do it in 0/1 AWG soon.

How big is your stock alt?

 

[kurrupt 10+ year member]

just did a yukon today excpet i ran 2 runs of 0 gauge instead of one shit works