Thank you for your response.
The portable breathalyzer tests are usually less reliable than those in the police station and it is more difficult to have the results of the portable breathalyzer test admitted into evidence. However, the breath test given at the station is generally admissible as long as the proper foundation is made which basically consists of records of calibration, proper certification of the breath test operator and that proper procedure was followed.
The breathalyzer test is meant to register deep lung breath, such that the air should not be contaminated by the presence of such things as gum, oil or residue. Unfortunately, resources that state that a person can test over the legal limit with one piece of spearmint gum and the like are not considered generally reliable. Nevertheless, there is a requirement that police observe a suspect for at least 15 minutes prior to a breath test so that there are no foreign substances introduced that could affect the test results.
Because the test results seem to be at odds with your conduct and demeanor at the time you were arrested, you may want to insist that your attorney focus on challenging the breathalyzer results, both from the angle that the machine was not working properly, or the police did not properly observe you for the requisite time and the other angle that the introduction of some substance caused the inaccurate reading. You are entitled in discovery to the records of the machine, the log book, the control reading, the certification of the operator, etc.
However, even with the breathalyzer results excluded whether you have a triable case would also depend on what the police report
states and how the police would testify regarding your conduct and actions that night and the conclusions they made.
Please feel free to ask any follow up questions.