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Old 08-03-2018, 06:04 PM   #4
1stgensleeper
 
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Name: 1stgensleeper
Title: Too Much Time
Status: Not Here
Join Date: Jul 2012
Location: Modesto, California
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Posts: 773
Quote:
Originally Posted by ramthiscummins View Post
My truck has 150% overs (they might be bigger than that because I was dropping rail on a 2200us tune) and that is the biggest I would want to run on a daily driver that needs to pass a visual emissions test.
But if you were to step up to a set of 250% overs and drop your pulse width lower yet what is to be expected? You may actually find that it could hold rail pressure and still make the same power (maybe more?). I’ve talked with members of the Firepunk team over the phone before and I was told that it’s not necessarily the size of the injector that drains the rail, it’s how long the injector stays open. I’m not sure however if the pulse width could be lowered enough to clean up the idle haze from larger injectors. A tune could most likely be created to pass visual emissions testing, the motor just has to rev and not produce a large amount of smoke. It wouldn’t be a tune you’d want to drive around much on though.
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2006 QCLB 4x4 manual vb 47re, Savage Fab He351, exergy 100% overs, flo pro 5" exhaust
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