I'm somewhat new to the forum, and I'm looking to gather info and feedback on the Unichip for my 2003.5 MSP. I've done a little browsing, but I don't feel like searching the tons and tons of threads to find out everything I need to know. Please advise me on how well this unit works. Does it cause the CEL to come on? Is there any danger to using it? My car is completely stock.