A standalone engine management system is a replacement for the stock computer. It takes over the things the stock computer controlled - fuel injection, spark timing, etc. On a turbo motor or really serious NA buildup, it can let you take full advantage of the power the mods can give you where your stock ECU would be holding you back. On a near-stock motor, expect to pay a couple hundred dollars in dyno tuning on top of the initial purchase price to pick up maybe 5-10 hp if you're lucky.
A forum community dedicated to Mazda MX-6 owners and enthusiasts. Come join the discussion about restorations, performance, upgrades, modifications, classifieds, troubleshooting, maintenance, and more!