Re: MBC and emission test - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: MBC and emission test
Posted by Dean (more from Dean) on Wed, 19 Jun 2002 11:15:19
In Reply to: MBC and emission test, Anton, Wed, 19 Jun 2002 10:20:18
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No turbo will pass an emissions test while on boost. The testing should not go WOT for any vehicle. Many non-turbo engines are also running rich when at WOT.(wide open throttle)
If you have been heavy on the boost prior to the test without a highway run, there will be carbon in the cat which will be burning off and producing higher CO emissions. A 96+ ODB-II with two O2 sensors might take care of that. 94-95 will be vunerable for sure to this carbon burnoff creation of elevated CO levels. How significant is this? ... don't know.
Clean your injectors and make sure the plugs are decent too. I suggest a bottle of techron concentrate in a tank prior to the test.
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