Well I got it done. about a week before I got it done, I left my key in the on position to change my clock and the batts died, when i recharged them they never came back to specs so when i took in I got a good deal on 2 new batts so I had them install. My point is the trk was without power for 2-3 days and the compt was slicked. Then they installed new batts and did 11b23 and NOW the lieometer will not come up to 17mpg after driving a day or so, it used to go up to 18-19 and settle out at 16-17 just driving it to work after resetting it. My question is will it take along time for it to figure out again what is best for shifting ect, to get the same mpg i got b 4. also it idles a little rough now. I was wondering if this upgrade gives it more passive regen and thats why the mpg went down. Im gonna drive it more to see what happens, but again I used to get immediate results on the lieometer when i reset it, (16-17 mpg) now after driving for 20-30 miles 3 times it settles out at 14 mpg each time. Thanks for any opinions, I know this is really not a big prob, but just thought id see what some of you in the know thought. again thanks for reading all this.