MB Autowerks' Kleeman installation in a CLK320 took it from 164whp to 275whp. I don't recall any ignition mods.
Mitsubishi turbo folks will take an Eclipse from 150whp to 300whp without touching the factory coil (in many cases without even pulling the head). That's going from 14psi and pump gas to 20psi and race gas - not exactly the ideal conditions for spark to jump a gap.
Last edited by sixto; 10-11-2003 at 09:58 PM.