2008 GLI with FSI with 54000 miles. started throwing P0171 and P507 and will eventually throw misfire codes on all
P0171 system too lean bank 1 troubleshooting | VW Vortex - Volkswagen Forum
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VW B5: 1.8T Bank 1 system too lean (part throttle) - YouTube
2003 volkswaggen passat 1.8t: So I have the code p0171, I think its only at high rpms, if I keep my car driving bellow 3k rpms, it won't come up, and I
VW B5: 1.8T Bank 1 system too lean (part throttle) - YouTube
Calling all you AWM 1.8T owners - AudiForums.com
P0171 system too lean bank 1 troubleshooting | VW Vortex - Volkswagen Forum
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Upgrade Turbocharger compatible for Audi A4 A6 1.8T AEB/ ANB 53049880015 K04-015 K03 Turbo
Let's play name that part....................thanks to P0171 code | Volkswagen Passat Forum