Thanks for all the help everyone! I did disconnect the battery and left it that way for a few minutes then reconnected it...it seems to be doing better. AS far as needing a tune-up, I dont think so, I do them pretty regularly and changed the fuel pump, oil, trans fluid, even the differentials less than 5000 miles ago. My TB spacer does have that threading, or grooves...but I havent tried rotating it yet, I guess I just havent had the time. I really didnt notice any increase in power (although overall I think I did get some from my air intake and flowmaster exhaust)...but I have gotten a very noticeable increase in gas-mileage. OMG, seriously, I used to have to fill up about every 4-6 days and as of today I am on my 8th day of full-throttle driving (and I tend to drive the same distances every day, etc) and I still have a hair under a half-tank!!!!!!!! I honestly wouldnt have believed it myself but I know my Jeep, and my pedal-to-the-metal driving style and I also know how often I was at the gas station and trust me, I havent been there since a week ago yesterday AND I still have a half-tank!!! Sorry for rambling now but the more I drive and not see my gas gauge move towards empty, the more I love that spacer!