Big 3 upgrade on an e30?

[Kevinl]

I ordered a luke box and plan to run 1200-1400 rms between my two amps is the big 3 a necessary upgrade on a e30 the stock battery cable is pretty beefy looking

[Gregs///M]

I run about 500 watts and replacing the engine to chassis ground cable and alternator to starter cable with larger made a significant difference.

I immediately noticed increased starting times from my motor during cranking and more stable electrical during high output bass.

The rest of the cables are sufficient.

http://www.r3vlimited.com/board/showthread.php?t=246076