The Cart Before the Horse: Spec 3 Build

[D_Eclipse9916]

Honestly the 90 or 110 or 140 is fine. Redline also has formulas for lsd friction modifier. Do not use that.

For the trans, there’s two specifications because the ZF in the 328i and M3 use ATF while your getrag uses MTL.

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Honestly the 90 or 110 or 140 is fine. Redline also has formulas for lsd friction modifier. Do not use that.

For the trans, there’s two specifications because the ZF in the 328i and M3 use ATF while your getrag uses MTL.

Also I broke a diff bolt. For road racing you would never but if you are autocrossing you might.