Boys, I've installed a F6 Intercooler and ProcessWest Under Battery Pipe on my BA XR6T 12/02 last week. She is stock, with F6 CAI and K&N. When it's started the idle shoots up to 2kapprox, then drops to say 1,500ish then drops once car is warmed up. Not particuarly concerned with this. - But if I don't let her warm up say 5 minutes, when I put into reverse, she coughs and splutters badly, need to either put back into park and let warm up or according to the Missus, turn car off and start again and let warm up. Any thoughts why car needs to be warmed up, generally I have warmed car up some, depending on outside temp and or time permitted. I wonder if winter is adding to the problem, but assume it's still going to be there in summer? Any thoughts or experiences welcomed. dm