Ok this may seem like a dumb question, but I need help?? My tune is in a good state and the engine drives fine at all throttle positions. Now My problem!! I dont do it to often but sometimes I can, from a dead stop hammer the throttle and it will light the tires through fist and partially into second gear. This is what I would normally expect. But then I will try it another day and it will barely spin the tires and just accelerate. Now i have done this several times in a row to make sure it wasnt the ashfalt or something. Today and yesterday it wont light em up from a stop. But a week ago it would do it all day??? Could this be caused by low fuel?? Or a worn trannsmission?? Or what?? it makes no sense to me?? Can you help or suggest something? I do self tuning etc. Thanks greatly.