Posted 4/12/2009 12:46 (#677786 - in reply to #677554) Subject: Re: 2004 Duramax/Allison
NE SD
Mine doesn't do it when I let out of it, it does it under acceleration. Only when the filter is plugged. Doesn't have to be a large tune on an LLY. 65+ hp will do it if the filter is plugged.