I've got a 94LE GA16DE 4spd auto. Has anybody tried the Blazt software? If so is it worth the chips? What can you actually change in the PCM with it? Is there anything else out there for this engine's computer program alterations? Just wondering and always looking for mileage/performance improvements. I'm currently getting 20 city and 34 highway but the exhaust burns very black at the tail pipe. The car is currently stock with over 160k on it but uses no oil and does not smoke. Runs good, starts well, and performs decent.