I purchased my Grand National last week from a dealer and I have no information on the car. I have been trying to piece everything together. I searched the forum and I haven't seen much information on it. I pulled out the stock ECM and I seen a Quad Air Inc sticker on the side. I removed a cover and I see a chip on the computer. The Chip says R93 H in middle and at top says F and 9. On the bottom line it says 3 and 5 below it and 6 and 7 below that. Any information on the chip or quad air inc would be great. I haven't been able to locate a website for Quad Air Inc. I am guessing they are out of business.