The big 3 upgrade - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

crazyfrenchbiker · 12-06-2012, 10:28 PM

Has anyone performed this upgrade on their system. If so, what's your current RMS draw from your audio gear and what gauge wire did you upgrade to?

2forme · 12-06-2012, 10:36 PM

Ummm whats the big 3.....

crazyfrenchbiker · 12-06-2012, 10:40 PM

The “Big 3” upgrade is a swap or addition to these three cables:

1) Alternator positive cable that runs to the positive terminal of the battery
2) Negative battery cable that runs from the battery to the vehicles chassis
3) Chassis grounding cable that runs to the engine block

ProTekk · 12-06-2012, 10:51 PM

Haven't done it yet but I absolutely need to due to my audio equipment. Once I get everything in order I plan on doing a DIY.

crazyfrenchbiker · 12-06-2012, 11:01 PM

Any idea what the stock gauge is? I'm thinking of upgrading mine to 4 gauge, but I am not sure if it's worth it.

mashal · 12-06-2012, 11:42 PM

What system are you planning to run ? I have never seen anyone do this unless they are pushing more than like 3000watts

I-Tapatalk

crazyfrenchbiker · 12-06-2012, 11:48 PM

The total system should be around 2500W RMS.

mashal · 12-07-2012, 01:02 AM

Lol what are you running ? That trunk is never gonna be the same with that much poundage

I-Tapatalk

crazyfrenchbiker · 12-07-2012, 01:15 AM

Quote:

Originally Posted by mashal

Lol what are you running ? That trunk is never gonna be the same with that much poundage

I-Tapatalk

Wait for the post and see

koast2koast · 12-15-2016, 04:07 PM

Did you ever get around to doing this? I'm keen to do it on my 86.

jasonojordan · 12-15-2016, 04:32 PM

Well since this was 2012 when the last post was made I think its safe to assume that the system we are here to "wait and see" killed him.

PandaSPUR · 12-15-2016, 05:10 PM

The trunk probably rattled itself apart with that much power. Thank god it did.

Leonardo · 12-15-2016, 05:17 PM

I have run two amps in my FR-S off one 2awg wire. Had zero issues. Had a cap too, but did not need it, so did not install it.

I imagine that you would need some very hungry amps and subs to need this upgrade. I ran 2 15" earthquakes with a 2000W Lanzar bridged to each one, and a 4 channel amp run to the interior speakers. My headlights dimmed in my Acura.

And, now I can't hear. WHAT???

koast2koast · 12-16-2016, 01:35 AM

Quote:

Originally Posted by jasonojordan

Well since this was 2012 when the last post was made I think its safe to assume that the system we are here to "wait and see" killed him.

ha ha ha!

12-06-2012, 10:28 PM	#1
crazyfrenchbiker Hot Lava 6MT Join Date: Jul 2012 Drives: Hot Lava FR-S Location: Omaha, NE Posts: 398 Thanks: 19 Thanked 78 Times in 60 Posts Mentioned: 12 Post(s) Tagged: 1 Thread(s)	The big 3 upgrade Has anyone performed this upgrade on their system. If so, what's your current RMS draw from your audio gear and what gauge wire did you upgrade to?

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12-06-2012, 10:40 PM	#3
crazyfrenchbiker Hot Lava 6MT Join Date: Jul 2012 Drives: Hot Lava FR-S Location: Omaha, NE Posts: 398 Thanks: 19 Thanked 78 Times in 60 Posts Mentioned: 12 Post(s) Tagged: 1 Thread(s)	The “Big 3” upgrade is a swap or addition to these three cables: 1) Alternator positive cable that runs to the positive terminal of the battery 2) Negative battery cable that runs from the battery to the vehicles chassis 3) Chassis grounding cable that runs to the engine block

12-06-2012, 11:01 PM	#5
crazyfrenchbiker Hot Lava 6MT Join Date: Jul 2012 Drives: Hot Lava FR-S Location: Omaha, NE Posts: 398 Thanks: 19 Thanked 78 Times in 60 Posts Mentioned: 12 Post(s) Tagged: 1 Thread(s)	Any idea what the stock gauge is? I'm thinking of upgrading mine to 4 gauge, but I am not sure if it's worth it.

12-06-2012, 11:42 PM	#6
mashal DADA Join Date: Jun 2012 Drives: 2013 Location: Kanada Posts: 1,500 Thanks: 47 Thanked 388 Times in 249 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	What system are you planning to run ? I have never seen anyone do this unless they are pushing more than like 3000watts I-Tapatalk

12-06-2012, 11:48 PM	#7
crazyfrenchbiker Hot Lava 6MT Join Date: Jul 2012 Drives: Hot Lava FR-S Location: Omaha, NE Posts: 398 Thanks: 19 Thanked 78 Times in 60 Posts Mentioned: 12 Post(s) Tagged: 1 Thread(s)	The total system should be around 2500W RMS.

12-07-2012, 01:02 AM	#8
mashal DADA Join Date: Jun 2012 Drives: 2013 Location: Kanada Posts: 1,500 Thanks: 47 Thanked 388 Times in 249 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Lol what are you running ? That trunk is never gonna be the same with that much poundage I-Tapatalk

12-15-2016, 04:07 PM	#10
koast2koast Member Join Date: Dec 2016 Drives: 2015 Toyota 86 high spec Auto, TRD Location: South Africa Posts: 12 Thanks: 1 Thanked 4 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Did you ever get around to doing this? I'm keen to do it on my 86.

12-15-2016, 04:32 PM	#11
jasonojordan Senior Member Join Date: Jul 2013 Drives: 2013 satin white brz limited Location: Cottage Grove MN Posts: 1,049 Thanks: 162 Thanked 511 Times in 326 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Well since this was 2012 when the last post was made I think its safe to assume that the system we are here to "wait and see" killed him.

12-15-2016, 05:10 PM	#12
PandaSPUR PandaPandaPandaPandaPanda Join Date: May 2014 Drives: 2015 BRZ Limited CWP Location: New York City, NY Posts: 1,432 Thanks: 776 Thanked 697 Times in 438 Posts Mentioned: 12 Post(s) Tagged: 1 Thread(s)	The trunk probably rattled itself apart with that much power. Thank god it did.

12-15-2016, 05:17 PM	#13
Leonardo Country Boy 4 Life Join Date: Jul 2012 Drives: 19' & 06' Ridgelines, 13' FR-S Location: EUGENE Posts: 5,228 Thanks: 6,719 Thanked 5,293 Times in 2,720 Posts Mentioned: 47 Post(s) Tagged: 1 Thread(s)	I have run two amps in my FR-S off one 2awg wire. Had zero issues. Had a cap too, but did not need it, so did not install it. I imagine that you would need some very hungry amps and subs to need this upgrade. I ran 2 15" earthquakes with a 2000W Lanzar bridged to each one, and a 4 channel amp run to the interior speakers. My headlights dimmed in my Acura. And, now I can't hear. WHAT???

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