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: New to Duramax and this forum LLY ?'s timvan 11-10-2009, 10:13 AM Hello all, Just picked up a 2006 lly, what can I do to make it a lbz...other than the 50 hp tune...whats different? Are the Mp's the same? Im in need of a edumacation on this diesel! Thanks in advance! Tim BlakeN08 11-10-2009, 10:21 AM exact same except the tune... timvan 11-10-2009, 10:24 AM Excellent thanks!.. Are there any tuners that wont leave evidence for warranty work... save the oem file to upload later with same name ?? Colorado Christian 11-10-2009, 02:20 PM from all accounts, LLY gets better MPGs stock timvan 11-10-2009, 02:41 PM Im not so sure it is stock, as far as I cen tell its starting off in 1st gear... hard to tell without equipment though Colorado Christian 11-11-2009, 06:31 PM As far as a tune goes - no matter what tune you have, you will need to take it off and put the truck's stock tune back in before you go in for warranty work (or any other work for that matter - sometimes they will perform "upgrades" to your stock program without your knowledge and if they do that while a tune other than stock is in place, your tunner will no longer work properly) Beels 11-17-2009, 12:34 PM Air filter is different. tampa1020 11-18-2009, 01:02 AM Like stated above ONLY the TUNE... | ||