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GENUINE MOTOR PARTS AND ACCESSORIES BULLETIN PAB1081: SCREAMIN' EAGLE UPDATES. Purpose: To inform dealers of Screamin' Eagle® Pro Street Tuner software changes related to Stage II for Trike models and Smart Tune PRO improvements. The Screamin? Eagle team has identified and corrected integration issues which have triggered false diagnostic codes (P0134 and P0154) following Smart Tune PRO installation on some models. Update dealership computers with the latest Pro Street Tuner software. The software is available for update now through the normal update process. California update for the exceptions will be communicated as Harley-Davidson receive this approval.