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Discussion Starter · #1 ·
I just bought a 06 lbz with 182k miles,no mods, it runs smooth down the road.when I floor it it smokes just a bit then clears up and pulls good. I noticed a few days ago the vanes arnt sweeping, exhaust has constant hiss. I put it on scan tool today, it shows vanes at 80%. it never changed.there are no codes present. I done alot of searching before posting, it seems most truck were throwing codes, mine isnt. Mileage doesnt seem to be as good as last lbz I had
 

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so at idle the vanes are a constant 80%?

under throttle what are they?
 

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Discussion Starter · #3 ·
They are constant at idle 80%, when I take they drop, wot is in 25-27, when I let of after wot it drop to 2, then starts to climb back up
 
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