I have the MSD SCI-L ignition. I got it mainly because it has a revlimiter (which my Mugen chip did away with). I didn't wanna blow another B16 cuz of my shitty trans...and not having the protection of a revlimiter. I do believe that turbocharged cars see the most benefit out of an MSD ignition. It produces a stronger spark (multiple sparks at low rpms), which I thought also would go along nicely w/ my denso iridium plugs. I believe that the cost was like $220 from
www.jcwhitney.com . You do not
need a modified dizzy cap & blaster coil. They are optional (and nice to have). I'm not using either of those. I just have the ignition box, and it works fine and serves my purposes quite well
