lexas dave Posted November 8, 2008 Posted November 8, 2008 MY 1990 LS 400 DID NOT PASS SMOG BECAUSE OF HIGH NOS. MOST LIKLY I NEED A NEW EGR VALVE. WHERE CAN I GET THE BEST DEAL?
jcrome04 Posted November 9, 2008 Posted November 9, 2008 You should figure out exactly what the problem is before you just start replacing parts in a hope that it'll be the right one. Oh yeah, and only one thread should be necessary per topic B) You can try Carson, Sewell, or Irontoad, just to name a few.
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