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IS THIS THE PLACE TO POST A QUESTION ON THE DURAMAX VAN? WELL HERE IT IS IF IT IS NOT I'LL POST IT SOMEWHERE ELSE ALSO.. I AM WANTING TO DO MODEST POWER GAINS, OR MORE IMPORTANTLY INCREASE FUEL MILEAGE, WHAT IS THE CHEAPEST OR THE BEST WAY TO GO ABOUT THIS? I BELIEVE IT HAS THE 4L80E TRANNY, THE 8TH DIGIT ON THE VIN IS A 2 WHICH WOULD SUGGEST A LLY ENGINE IF I AM RIGHT? SO I AM NEW TO THIS ALL.. I CURRENTLY HAVE AN AFE FILTER. ANY SUGGESTIONS WHICH TUNER TO GET?
 
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