While looking at ZZP's website I came across this product ZZ Performance Anyone ever used it?
After more research I found something called a "Happy Knob" which does the same thing. I'm looking at the option to be able to add timing, when running race gas and have read that it can be done by modifying the IAT spark advance table in the PCM and fooling the IAT sensor into thinking it is cooler. See: What is a Happy Knob I've heard of people making these and wondered if anyone had some experience or instructions to make one. Caspers sells a timing commander for the 3800 that does the same thing for $150, but I've heard they are simple to make.
Anyone ever made one or used one? And let me say in advance that I do have an Aeroforce gauge and will be scanning if I ever use this.