Well, aside from the fact that I can't launch worth a crap, when the shop that put my exaust on ran the pipe, they pushed the pipe so far into the converter it hit and mashed the honeycomb stuff!!! So, not only does the gasses have a very limited escape route out of the converter to begin with, but the too big injectors plugged it almost completely. No exaust flow, no sub 13 sec Qtr mile times!