Its amazing what you can find if you look for it. I was just getting ready to start a thread with EXACTLY the same problems when I found this. I have talked to eric at TT and he said my blms were a little high and it could be a vacuum leak or a bad maf. Mine didnt do it all the time but mainly at partial throttle. You could give it the gas and it would straighten right up and take off. Could the car sputtering also cause detonation? I am pretty sure I have the comp beehive springs and sure hope that isnt the problem.