Diesel Bombers - 6.7 cummins boost drop

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clay952

04-18-2014 05:14 PM

6.7 cummins boost drop

HELP! i have a 2007 6.7 cummins full deletes with a smarty jr.
when i go full throttle it will boost to 35psi then suddenly drop to 25psi. is this normal? or is there something wrong? :humm::argh:

coors_man_2005

04-19-2014 09:44 PM

Have you checked all of your boost tube clamps making sure there tight. It shouldn't loose 10 psi really quick now it will spike up then loose a few #'s. Both mine do this

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