Quote:
Originally Posted by w0nderbr3ad
check the vacuum hoses leading from the egr to bpt valve. theres a 90* bend vaccuum hose that usually gets eaten up. My nox read about 4000 when I did smog and I fixed that and ran fine. Check all the other vacuum lines behind the head as well.
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I promise it's your EGR-BPT valve, or the vacuum lines running up to it. You can just bypass it to pass the sniffer test, then hook it back up when you're done. You'll run a tad rough with it bypassed, but it'll pass with flying colors.