IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

Big 3 Upgrade

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Old 03-11-08, 12:47 PM
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carlos
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Default Big 3 Upgrade

Has anyone done the big 3 upgrade on an IS350? I am curious how hard it is to get to the alternator.

Also, where is the wire that goes from the engine block to the chassis?
Old 03-11-08, 12:49 PM
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D.Jobin
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I'll be attempting this in a couple months. I'll report back if no one else does.
Old 03-11-08, 12:51 PM
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carlos
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LOL... I already did the battery ground to chassis one. That was easy. I kinda need to know by the next 2 weeks for the other 2.
Old 03-11-08, 12:55 PM
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D.Jobin
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did it help any?
Old 03-11-08, 12:56 PM
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Robs IS250
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Big Three?? Wtf Is That I Wanna Know!! Lol
Old 03-11-08, 01:04 PM
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carlos
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Originally Posted by D.Jobin
did it help any?
That one cable alone... no.

I don't have the amp installed right now. I sent it off to get fixed (keep going into protect mode). When I did have it in though... every time the bass would hit, the RPM's would drop a little bit. I'm hoping finishing the Big 3 will help.

I'm running an Elemental Designs nine.1 @ 1200 watts and using 0/1 gauge wire and an Optima Yellow Top.
Old 03-11-08, 01:05 PM
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carlos
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Originally Posted by Robs IS250
Big Three?? Wtf Is That I Wanna Know!! Lol
In short, its upgrading the stock wiring that goes to the battery to help the electrical system flow a little better.
Old 03-11-08, 01:07 PM
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Robs IS250
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blah i dont got a system nor do i plan on one
Old 03-11-08, 01:09 PM
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D.Jobin
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I'm doin a JL 1000/1 and 300/4 to a Batcap and Optima Yellow, all with 0 gauge wiring. I looked into a bigger alternator with no luck.
Old 03-11-08, 01:14 PM
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carlos
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Originally Posted by D.Jobin
I'm doin a JL 1000/1 and 300/4 to a Batcap and Optima Yellow, all with 0 gauge wiring. I looked into a bigger alternator with no luck.
Yea, as far as I know... no one makes an upgraded alternator for us. You can always have the stock one rewound though.

If the Big 3 doesn't help, I'll jsut add another battery in the trunk.
Old 03-11-08, 01:16 PM
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is350
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Originally Posted by D.Jobin
I'm doin a JL 1000/1 and 300/4 to a Batcap and Optima Yellow, all with 0 gauge wiring. I looked into a bigger alternator with no luck.
you dont really need a bigger alternator. just do the big 3.
Old 03-11-08, 01:18 PM
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carlos
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Originally Posted by is350
you dont really need a bigger alternator. just do the big 3.
Easier said than done
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Old 03-11-08, 01:34 PM
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Originally Posted by car_lost
That one cable alone... no.

I don't have the amp installed right now. I sent it off to get fixed (keep going into protect mode). When I did have it in though... every time the bass would hit, the RPM's would drop a little bit. I'm hoping finishing the Big 3 will help.

I'm running an Elemental Designs nine.1 @ 1200 watts and using 0/1 gauge wire and an Optima Yellow Top.
Well i did just the big 1 (negative to chassis) and it helps in my application since I am running 4 gauge to a 800 watt amp. Sound is clean with no dimming whatsoever. I am sure you will need to do the other 2 since ur system is bigger.
Old 03-11-08, 01:46 PM
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carlos
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Originally Posted by SpaceCadet
Well i did just the big 1 (negative to chassis) and it helps in my application since I am running 4 gauge to a 800 watt amp. Sound is clean with no dimming whatsoever. I am sure you will need to do the other 2 since ur system is bigger.
Yup, that's why I'm wondering is anyone knows where the stock engine block to chassis is. I want to run a 0/1 gauge along side it. I wanna do the same with th alternator.
Old 03-11-08, 02:05 PM
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Would a Grounding Kit help as well????


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