*** EDIT THE ERROR CODE CAME BACK, PLEASE READ ON AND ALSO MY OTHER THREAD IN THE TECHNICAL DISCUSSION FORUM ***
Hi boys! I think we might have found the answer to the SES light (0171 fuel sys lean b1) code appearing particularly on 2004 SpecVs...
A guy I know also owns a 2004 SpecV and was 100% stock until installing a CAI this week. As soon as he put it on and went for a stroll, BOOM, SES light.
The code was also fuel sys lean b1, so it's probably that as another friend suggested, there's an air turbulence created at the front of the filter that alters the normal airflow expected by the MAF and since it's a bit off, that and the fact that 2004 ECMs are so tightly tuned, it throws codes... Some have suggested putting a piece of tape just at the front of the filter, where the air comes in directly front the front air dam near the fog light... Has anyone ever tried this? It's supposedly to prevent the air from hitting DIRECTLY the front part of the CAI filter and not create a weird turbulence...
Because I also took out my S-AFC II completely, and the code still came back, so it wasn't the A'PEXis fault. We also had a idle air volume learning procedure done (after timing advance) and no code has come since. It's been 2 days without a SES light! YOUPI!
Hi boys! I think we might have found the answer to the SES light (0171 fuel sys lean b1) code appearing particularly on 2004 SpecVs...
A guy I know also owns a 2004 SpecV and was 100% stock until installing a CAI this week. As soon as he put it on and went for a stroll, BOOM, SES light.
The code was also fuel sys lean b1, so it's probably that as another friend suggested, there's an air turbulence created at the front of the filter that alters the normal airflow expected by the MAF and since it's a bit off, that and the fact that 2004 ECMs are so tightly tuned, it throws codes... Some have suggested putting a piece of tape just at the front of the filter, where the air comes in directly front the front air dam near the fog light... Has anyone ever tried this? It's supposedly to prevent the air from hitting DIRECTLY the front part of the CAI filter and not create a weird turbulence...
Because I also took out my S-AFC II completely, and the code still came back, so it wasn't the A'PEXis fault. We also had a idle air volume learning procedure done (after timing advance) and no code has come since. It's been 2 days without a SES light! YOUPI!