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Message: <blockquote data-quote="AlpinaB9" data-source="post: 118975" data-attributes="member: 2482">I have a SMT 6 but not in my B'mer, its good if you want to replace the Flap type Airflow sensor to a Map sensor type, this will definitely inprove the airflow, I use a wideband Lambda with datalogiing to tune plus an old Knock sensor to listen for knock. I even have a exhaust temperature guage but seldom use it. Definitely a better improvement. But if you have an E30 ba aware that if you have a flatspot some cars have a two fuel pumps, the high pressure one is outside the tank and a low pressure one in the tank, it is quite common for the in tank low pressure pump to fail and you will have flat spots. Try checking that first before you play with the tuning.AlpinaB9</blockquote>