I run the stock M103 EZL ignition with the fixed R16 resistor removed to pull a bit more advance.

Using NGK BP6EFS plugs with stock Mercedes wires.

Plenty of hot spark and much power up to redline....

Both turbos are fixed at .48 bar / 7 psi boost.

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1971 280SL ROADSTER
1988 300CE TWIN TURBO WIDEBODY
1994 E320 CABRIOLET
1999 C43 AMG
2005 G55K AMG
2008 CLK63 AMG BLACK SERIES