as expected, it runs a million times better... BUT now my NB simulator is doing nothing (447mv) and prevents my TCC from locking up after 30 seconds of clearing the code. this LC-1 has caused me nothing but problems at this point. The LED was defective. The serial port is apparently defective, and now it appears the NB analog output is defective. I wish i had read the reviews on this POS before wasting $150.