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  1. Catless downpipe MPG?

    Just installed Titan motorsport catless downpipe with generic 02 sensor CEL spacer. Also run a Dinan stage 1 controller. Noticing a slight decrease in MPG, is that common? I know the obvious catless means no restriction which means less work on the engine to produce more performance. And MPG...

  2. 02 sensor spacer for catless dp

    Running a stage 1 dinan/carbahn controller (still have new car warranty). Looking at going catless dp very soon & assume this will trigger the CEL. Any brand or L vs J style 02 spacers to recommend?


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