Blitz Boost Controller: $615 J&S Knock Controller: $579 Additional Used MAF: $150 Selin Translator: $280 SZ ECU Map Selector: $350 Total: $1974 At this point, why not just go with a good standalone? It will have more features and safeties than all of those items combined. Sure, you may have to spend a little extra to buy the sensors & solenoids to make it work, but what's a few hundred dollars extra when you've already spent thousands on a build?