Join Date: Aug 2007
Car Year: 07
Car Model: FXT
Feedback Score: 1 reviews
If you are talking about using the Cobb map, read the release notes, it will tell you what hardware configuration it was designed for. Without bothering to look, I would bet you a paycheck that it is meant to use an aftermarket downpipe, which will be a significantly different tune than all stock exhaust.
Can you run it without hurting the engine? You could undoubtedly tiptoe around town staying out of boost, until you can schedule a proper tune, and be fine. If you want to really drive it to potential as a long term solution, I don't know if it will be dangerous, but it will definitely be sub-optimal.
The tune is so important with these cars, if you need to cheap out on any one area, this is not the one to choose. A good dyno tune is about $500, a motor rebuild might be $8,000, depending on local shop rates. Knock a couple grand off that number if you can do most of the work yourself.