Hi All:

___Colder temps increase your tires RR by a huge margin, increases frictional losses in all rotating parts, allows some of your fuel charge to pool against the cylinder walls of a very cold block, and a colder then normal coolant temp tells the ECU to richen up the mixture. All either prevent the most efficient combustion or increase friction. Colder temps as in a CAI are great for HP down a certain temp but are worthless for FE.

___My ride home in the Accord this morning in a miserable 45 - 51 degrees F temp makes it **** hard to maintain what would normally be a walk in the park. 51.2 mpg to my place of work last night with every trick thrown her way. She now sits with a lowly 48.9 with a low of 48.1 on my way home this morning Above 72 degrees and all is great in the FE department of just about any automobile. I have seen hits in any number of automobiles at ~ 62, 52, 45, and 32 degrees F. Below that and the best you can expect from your automobile will be simple survival for lack of a better term …

___Good Luck

___Wayne R. Gerdes
___Waynegerdes@earthlink.net