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      12-20-2023, 09:46 PM   #16
bigjae1976
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2013
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Drives: 11 E90 M3 Individual
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2004 BMW M3  [6.33]
2011 BMW E90 M3  [6.83]
2013 BMW 328i  [6.67]
Quote:
Originally Posted by spxxx View Post
Thanks for sharing, I have a lot of low hanging fruit left to pull (airbag module, curtain airbags, entire headliner for that matter, AC is tempting with it's forward location too) and figured this would be a good place for knowledge sharing since it's such a rare project and the businesses building E9x racecars obviously aren't going to share everything publicly.

I wonder if there's much benefit moving the battery into the passenger rear footwell area to shorten the massive 12v wire.

I'll likely focus on the driver side loom that runs to the amp/Bluetooth module once I've pulled the modules/headliner & lower hanging fruit
You can relocate the battery but most sanctioning orgs have rules especially if it’s a lithium ion. NASA has some specific rules.

I use a lithium iron phosphate battery which isn’t subject to the same rules…also harder to find.

You might want to leave the battery alone for now until you get the low hanging fruit for weight distribution purposes. As you pull out weight you’ll notice the effect of 10-15lbs more and more.

If you delete a bunch of modules then you can use an aluminum wire for the battery. Aluminum has a higher resistance but is much lighter. Knukonceptz.com sells aluminum wire in 8-4-0 gauges.
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