How to tell if i have a High Performance stall or a POS stall converter? my converter has no imprints or label no d5 its just a dark grey stall converter seems to be between 9.5-11" it seems to stall near 2600-2800 cant really tell because my scanmaster RPM will jump from 2500 - 2900 and my tires will spin in between that ive tried slowly but the scanmaster is confusing me. cant find out true stall.. on WOT i feel my car might overev sometime not sure if the chip is set up for a higher rpm cut off or if the stall is just giving out or something? maybe i need a new stall the tranny shifts hard and tight... sometimes ifeel like the engine just freespins on top @ wot hard to explain? maybe its because its not locking up on wot? the tcc solenoid did go out on me i just ordered a new one will be replacing it today or tomorrow