by cummins12club » Fri Nov 02, 2012 10:09 am
A half a second not a whole second I just got a set machined and they should be done next week so ill try to figure out how to post pics but like bc847 said unless u have a turbo w a 9cm exhaust housing I don't know if u will notice a difference because they ate supost to be 40cc more fuel at rpm below 1500 rpm I can't say for sure a cc number they add or hp or even if they will help all I know is I noticed a big spool up difference and throttle response on the street and 5 tenths faster at the track keep in mind as well I replaced my lift pump at the same time so that could have had an added effect as well