So since i installed my Exhaust.... - Ford Powerstroke Diesel Forum
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post #1 of 9 Old 05-07-2013, 06:15 PM Thread Starter
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So since i installed my Exhaust....

for some odd reason when my truck hits its correct temps for the defuels to turn off, or when the truck is warmed up. At stop lights or reversing it sounds like its revving up a little, The boost will read 1 psi, but then it will go away and return to a normal idle.... Idk if there is a vacuum leak or if its because it is straight piped and loosing back pressure. Keep in mind i have full h&s deletes also.
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post #2 of 9 Old 05-07-2013, 06:31 PM
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My truck does the same thing but it shows my pyro at 2600 deg when it's shut off and it just started doing it when I put my exhaust on I am running h&s unlocked on my 2013
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post #3 of 9 Old 05-07-2013, 07:05 PM
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probably cycling the VGT to keep in exercised
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post #4 of 9 Old 05-08-2013, 04:34 AM
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Mine does it to. It's because of the pyro reading.

'15 F-250 Platinum CC/SB Black
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post #5 of 9 Old 05-08-2013, 07:42 AM Thread Starter
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So what does all this mean...
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post #6 of 9 Old 05-08-2013, 01:26 PM
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1. Is the RPM actually rising? Or are you just hearing a tone change in the engine? The variable vane turbo system will do periodic full sweep position checks to validate it is working correctly. You will hear a change in exhaust note during this check.
2. In order to read exhaust gas temperatures with an H&S Product while running High Sulfur Calibrations, you must install an aftermarket EGT solution. The OEM EGT sensors are turned off on such calibrations, and honestly are far enough down the exhaust stream that they are meaningless anyways. The high temperatures you might now be seeing are erroneous info and just due to the recalibration process that is done by H&S to enable the device to read a factory DPF temperature probe installed into the original EGR temperature probe location. If you don't have an EGT solution, switch your pyro source over to H&S Pyro, or turn your defuels off and pick another gauge from display.


Hope that helps. Thanks!
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post #7 of 9 Old 05-08-2013, 10:09 PM Thread Starter
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Quote:
Originally Posted by H&S Tech View Post
1. Is the RPM actually rising? Or are you just hearing a tone change in the engine? The variable vane turbo system will do periodic full sweep position checks to validate it is working correctly. You will hear a change in exhaust note during this check.
2. In order to read exhaust gas temperatures with an H&S Product while running High Sulfur Calibrations, you must install an aftermarket EGT solution. The OEM EGT sensors are turned off on such calibrations, and honestly are far enough down the exhaust stream that they are meaningless anyways. The high temperatures you might now be seeing are erroneous info and just due to the recalibration process that is done by H&S to enable the device to read a factory DPF temperature probe installed into the original EGR temperature probe location. If you don't have an EGT solution, switch your pyro source over to H&S Pyro, or turn your defuels off and pick another gauge from display.


Hope that helps. Thanks!
Thanks! it def has to be the check then.... it just does it quite often which i find kinda odd. My truck already has block off plates but not a full delete.
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post #8 of 9 Old 05-08-2013, 11:41 PM
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It sounds great when it cycles. It turns heads!



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post #9 of 9 Old 05-09-2013, 04:43 AM Thread Starter
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Quote:
Originally Posted by Balla6.7 View Post
It sounds great when it cycles. It turns heads!
Hahaha it does though. My buddy asked if my truck was a transformer. When it first did it after we straight piped it lol.
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