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Pretty new to installing my own exhausts and air cleaner. I've done it successfully twice before....Now I have a Dyna FXDB and I installed the VH short shots and an Arlen Ness Big Sucker...after I got done, I went to turn her on and my check engine light will not go off. I checked my 02 sensors and those are nice and snug....any ideas??
run the diagnostic on your bike. how to run it should be in your manual, it will give you a code then you can search the code and see what it is about.
on sportster it used to be, you hold the button on the speedometer (in the back of it) and turn on the key to ACC keep holding then OBD comes up and it will show up any codes you may have.
First check your error code:
It is most likely a o2 sensor error. When you increase the airflow by upgrading to a high flow air cleaner and a less restrictive exhaust the stock ECM map will cause the engine to run way too lean.
You can also clear the code and see if it comes back.
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