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Old 12-15-2009, 10:32 PM
BMWBLUES BMWBLUES is offline
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Location: annapolis maryland
 
Join Date: Dec 2008
Posts: 85
Mein Auto: 2001 540i 6speed
You will have to run simulators on the downstream sensors to trick the engine light, The only legal aspect would be emissions if you have the in your area and because of where the cats are located I doubt any "enforcer" would ever know. You would have to get the car dynoed before and after to see if there would be gains, unless someone already has dyno proof that you will lose or gain power...
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