Quote:
Originally Posted by theDreamer
Most states who have any requirement do the sniffer test already, Texas does not luckily. Texas does a computer check and visual inspection of all systems, but even at that many shops do not have a lift so they never can actually see under the car. They will just plug in OBD-II and verify lights, blinkers, etc. are all in check.
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they do a sniffer test in houston and the eight surrounding regions/areas. (or at least the last place i went) im sure its up to the shop. i had replaced an O2 sensor and tryed to get it tested before putting enough miles on the car before the sensors were reset and didnt pass. had to drive around for about 100 miles then i passed.