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      04-20-2012, 12:40 PM   #10
Boostin FD
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Drives: F82 M4
Join Date: Jan 2010
Location: St. Louis

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For cars 1996 and after, it's only obd2 plug... they do some scanning, make sure there are no faults and all the Emission stuff is operational.

We use to have that Gateway Clean Air program that acted like a Dyno with plugs for exhaust... however after number of engines getting damaged by people forgetting to turn the fans on or something, they canceled the program.

Cars before 1996 only require safety, cars after do the emissions and safety... but it's only that obd2 plug check thing.
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