I have read your post before on this issue and I have a question. I also wanted to install a 180 tstat. If I got a Diablo tuner to change the fan settings is that all? Would there be warrenty issues? Is it self explanatory to operate the tuner, not being a mechanic? Are there other setting changes you recommend? Would they have to be changed if I took the car in for service to the dealer? Your relpy would be greatly appreciated. Thanks!