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I’ve had my 2019 since November 2020, first Subaru anything. I have installed a COBB Accessport and Stage 1+ Big SF Intake and Perrin BOV about 6 weeks ago. Yesterday it threw the check engine light (plus others), the code was P0172. After looking around checking for leaks, etc I reset the ECU and removed the code and lights. They have not returned but still feel something is up. My AFR on my Accessport reads right when idling and driving but when taken out of gear and coast in idle or shift, it shows 22.02 until put back in gear or stopped. Anyone know what more I should do?
 

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Cobbs off the shelf tunes are pretty generic. I can't remember for certain but I think that code is for an O2 sensor. Many tuners disable that. A Jpipe will throw those often.

I've been overwhelmingly please with my Etune from Graham at Boosted Performance | Tuning | Consulting | Parts

Way better tune and much less $ than the local tuner with an engineering degree. And So very much better than Cobbs generics.
 
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