Mongo

Does anyone on this board have the aftermarket Autothority chip for their 928S4??? If so, do you like it? are there any noticeable changes? I'm just a bit curious as to what a performance chip will do for a 928 along with that loved RMB

Mike Schmidt

I had a set of the Autothority chips in my car. They do make a difference, but aren't worth the money in my opinion. I have a Dastek piggyback computer in now, and think that something like that is a much better way to go. Installation and tuning are more involved than just putting in a set of chips, but you'll get more power, and can tune for the optimal settings for your spcific car and it's modifications. Perfect Power makes a newer piggyback computer that will work with on an S4. I think that one is cheaper, and has more features. Unless you're going with some pretty major other changes to the car, that's the way I'd go.