4800-4900 is the best you will do unless you have a friend who is a dealer.
You must use the programmer that comes with the kit. It is specifically set up to make the Mag work for your application. You would not want to tune it with another programmer initially. If you want to tune it further, you can then use the Predator. Make real sure you know what you are doing.
If you are anywhere near central NJ, sned me a PM. We do them all the time.
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