Ok, I just put a 3" dp with high flow cat. I ordered it with the 02 sensor bung. I put it on my 04 gtp and re-hooked up the O2 sensor. Now my information center flashes "ice" and then the outside temp. Is there a problem with the dp and 02 sensor? or is my car's computer so smart that it is telling me that the roads are slippery? It did just begin to snow. LOL