[richs347]

Some stand alone systems are based on a speed density set-up - and they work great... However, with a 306 and an e-cam, I don't think that level requires you to fork up the cash for a stand alone system yet. However, they run about $1200 and up + tuning time / or dyno (unless you're willing to learn), and it will take $300 - $500 to convert to mass air. ...One of those pocket book issues. If you want to play for many years to come, it won't hurt to splurge now. Just remember though, that as your engine mods grow, so does the need for supporting hardware (injectors, fuel pumps, lines, meter, TB, ...axles, brakes, new tires, etc...)