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Old 08-08-2022, 12:26 PM   #99
Scooby Newbie
Member#: 357059
Join Date: May 2013
Chapter/Region: MAIC
Location: Frederick, Maryland
2021 WRX


I'm pro-tuned with this intake and late last week I got the p0172 CEL. Had a perfect storm of very hot/humid day, fresh tank of gas, and a big thunderstorm soaking everything. My AF Learning/AF Correct were way into the negative, rough idle and hesitation. I cleared the code and engine learning, and it's running better, but AF Learning is still around -17. WOT AF Correction 1 is fine but at idle it's way off. I'll take my intake apart, clean the filter and MAF sensor, check the harness for water, and see if it resolves itself before I take it back to my tuner for maintenance.

Wish I had seen this thread prior to getting Cobb's intake for my WRX. I knew that these intakes were touchy but I figured with a pro-tune I'd be fine long-term.
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