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I just took a couple logs using some of Versatuner's presets. Some pulls and some normal driving. Hope this is correct, if not I can take more tomorrow after work.

I just ordered an OBD2 adapter so I should be able to take a log once that arrives. Is it worth investing in Versatune or would it make more sense to find some other free software? I believe the primary cat is gone so that would make sense. Thanks guys.

Hey all, I recently acquired a 2013 mazdaspeed3 back in March. It had about 115k miles on it and I had not had any problems with it up until recently. The previous owner has done some minor modifications but had left it generally close to stock. I am not sure on any of the specifics when it...