Originally Posted by willwren
Smoother idle and better pull through the midrange. Just as stated above. I'm not sure why Pat is spouting no difference.
they burn the same as a S2, and with a modded S2 to play with this summer, there was no difference in the butt dyno if a set of S1, S2, or anything else was installed, all coils had no effect in the midrange or the idle of the vheicle.....
so if a S1 coil feels the same as a S2 coil that the MSD is supposed to be exactly like, why would you spend the extra cash to have red coils?