I'm not trying to argue with anyone, or start an argument, or convince you to either use MSD or not, or what to put on your car and what not to.
I'm a professional technician, and I make my living working on cars such as Porsche, Ferrari, Lamborghini, BMW, and Mercedes. I got to the level to be able to work on cars of this caliber by working my way up and by proving myself, and by rarely (if ever) being wrong on a diagnosis. I make my living not only doing performance work on cars that cost more than most people here's houses, but also troubleshooting those same vehicles.
I am offering insight into the problem for which this thread was originally created - your car is hard to start when it's cold. If you don't want to take the advice of someone who does this for a living, don't. But don't cop an attitude - especially when you came onto this forum asking for help and/or advice with your problem.
Like I asked earlier, what's your fuel pressure upon cold start, and what is it once it's warmed up? Hard start upon sitting for a while and/or hard cold start is a common problem with MANY different manufacturers...guess what the problem usually is? It's the fuel system, and those vehicles do EXACTLY what you're describing. What happens is the fuel system doesn't retain pressure and loses prime, and the fuel that's in the fuel lines drains back down into the fuel tank. When you come out to start the car once it's been sitting, the fuel system has to re-prime itsself - which is hard when it's cold, and especially hard with a weak fuel pump. The reason it will run once you've been cranking on it a while is because with the key on and the engine cranking, the fuel pump is running, and building pressure back up in the fuel lines. I'll bet if you drive the car down the road, shut off the engine, wait a few minutes, and try to start it again it'll crank right up - but if you wait more than an hour or so it'll be hard to start again. Am I right? This happens because in that period of time, the system doesn't have enough time to bleed itsself back down and lose pressure, and you've still got fuel pressure retained in the lines.
Some fuel systems have a regulator on the fuel rail (like most older Hondas - your prelude included I believe), and also have some sort of regulator internal to the fuel pump. If it were me, I would replace just the regulator to start, since it's extremely easy to get to (two 10mm bolts on the end of the fuel rail, one vacuum line, and one fuel line). Check your fuel pressure, then replace the regulator and check it again. If that still doesn't fix it, replace the fuel pump.
But hey, like I said, if you don't want advice from knowledgeable people, then don't ask. If you keep throwing parts at it, sooner or later I'm sure something you replace will fix it.
And by the way, putting on an ignition that 'increases spark' isn't going to make a difference when there isn't any fuel in the combustion chamber to be burned. The spark can be the hottest spark in the history of the world, but it isn't going to make a difference if there isn't anything for it to ignite.