whitegold Posted March 22, 2014 Share Posted March 22, 2014 my e7 400 has the dynatard on it and sometimes it works pretty good and will make 22lb boost when its workin and other times only 10 and I can feel the difference, I wa talkin to a friend about it and he said they make a Jacobs engine brake conversion kit that would really help, I looked around online for a bit and couldn't find nothing, anyone else heard of it? price? or aint it worth it? Quote THE MILKMAN DID IT..... Link to comment https://www.bigmacktrucks.com/topic/35118-jacobs-engine-brake-conversion/ Share on other sites More sharing options...
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