The Tuner is $389 plus about 8 bucks shipping. Easy to mount. You can either use a laptop, or home pc. It comes with an A/C adapter if you want to do downloads in your home next to your PC. But you have to keep taking it out of the car. A laptop is alot better. Especially if you want to datalog.
It is easy to use for me, but I am a network admin. If you have good windows skills it is easy to navigate. You need to download ANY reading material you can find. I have used these sites and pulled about all the documention I can find. I pretty much know what all the variables are for and their function. You don't get much of this at the time of purchase. But due to the web, I figure that is what helps keep the price down since it is all available there. These sites have plenty of folks willing to help. And programmers have written code I downloaded just a few days ago.
There is another called TwEECer. It is similiar. And has advantages. But wasnt available at the time. And looked to be having some small problems production wise. I think it will be an excellent product very soon. And probably is to the ones fortunate enough to already have one. But the EEC Tuner from Shiftmaster does all I need it to.
It does Data logging for the A9L family of processors.
Guess I should have posted the shiftmaster site too..
http://www.eec-tuner.com/