Quote:
Originally Posted by Cristobal09
How CAN they cheat it? Since what it reads is what goes into the system?
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A lot of times they'll use an OBD scan from a similar clean car, but still use the correct VIN from the dirty car so that as far as the DMV knows, everything matches up. Now if its a pre 1996 car which still needs the tailpipe sniffer and dyno, it's even easier for them to cheat.