i understand what your saying, and i dont think pulling codes will help, its not a prob with your motor, it is in how you drive it, but bfor you get all defensive, im not saying your a bad driver at all, im just sayin, with a stick, its VERY difficult to just pop the clutch and gas on it, your talking about having to have lightning quick reflexes to be able to get the gas to it bfor it dies, you said you used to do it all the time, but you can actually change the way you do it every time, whether you realize u r or not, if you dont do it with perfect timing, it will not work, next time, try to give it a few hundred rpm bfor you pop it, it might make all the difference in it takin off or boggin out, jus my $.02