I am the recent new owner of a 2008 GT500. When I bought the car it came with a Kenne Belle Mammoth 3.6L. When I had the car delivered to me, the person unloading the car off of the truck had trouble getting the car off the truck because it wouldnt idle, but after giving it some gas and allowing the car to heat up the car idled fine. There was some steam coming from under the hood from water in the coolant tank was coming out and evaporating on the block. I drove it back to where I lived which was less than a mile and it was driving a bit rough in 1st gear and felt like a lack of power in 2nd gear. The next day I had trouble getting it started but after I did and got it warmed up I filled it up with gas (91). When I came back from getting gas I noticed my engine was running very hot. The next day I went to go start it wouldnt start. I have a few engine codes (P0068, P061B, P2196, P2198) So, Ive consulted some people and heres what Ive been able to gather so far: it could be a possible tune issue as I can tell that the previous owner had a diablo tuner with the car and did not sell the car with the diablo tuner, so I'm assuming that the previous owner sold the diablo and put a factory tune back on the car or the timing is bad which would cause it to run rough obviously because of the aftermarket supercharger, also I am at a much more elevated area from where the car came so the air is significantly thinner. Some other people said based off the engine codes it could be my MAF/Throttle body and CAI not getting enough air in due to the band clamps not being tightened or the MAF being dirty and not being able to read correctly. I've also heard that it could be a bad fuel pump, some bad injectors or something of the sort (also the car came with a boostapump installed). I have checked my oil and the oil looks fine so I do not believe it to be anything too serious like a cracked block. I was wondering where I should start? I have consulted VMP and am in the works of getting a tune, and I've ordered new spark plugs and oil to do some general tune up tasks. I checked all the connections in my engine bay to make sure everything was connected and that the clamps on my CAI were tight. Could this all be a bad tune issue?