More air
Thread Starter
Registered User
Joined: Jul 2023
Posts: 7
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From: Ohio
More air I recently added increased air flow maybe too much through code PO171 bank 1 lean checked for vacuum leaks MAS oxygen sensor I made this product myself I better say I called it my own invention on other forums so the most not all replies only cared about that word so I’m thinking I need to get it turned now or any other ideas?
TECH Senior Member
Joined: Jun 2016
Posts: 22,291
Likes: 3,615
From: Central Cal.
You've said the same thing in multiple posts now. Wait until there is a response to a previous one.
And yes, cold air intakes are a known science by now, so unless you're cooling the air via A/C, you won't get it below ambient.
Look for flaws in your system like vacuum leaks or a bad MAF sensor.
And yes, cold air intakes are a known science by now, so unless you're cooling the air via A/C, you won't get it below ambient.
Look for flaws in your system like vacuum leaks or a bad MAF sensor.
Things like the IAT, MAF and 02 sensors are monitored by the ECU and if there's too much of one thing and not enough of another during the burn it throws a code. A lean condition suggests that too much air or not enough fuel is present and you need to find out what is causing this. In your previous post it was limited to bank 1 and since we have no idea what you've done to the air induction system all we can suggest are the things that are relative to your issue. As I've stated the ECU is not self learning and anytime you make a change it needs to be adjusted in the tune file.
