Boost 20-30psi - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 05-28-2013, 02:18 AM Thread Starter
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Boost 20-30psi

OK, so the issue is when I'm on the highway and I'm cruising then get into the pedal it goes to 30psi of boost and its quiet , but when I'm on the street and i punch it it just goes to 20-22 psi and its loud like a raped ape.
so what I'm asking is, is something wrong with my tuning or is this normal?

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post #2 of 5 Old 05-28-2013, 03:08 PM Thread Starter
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Anyone got the same thing that happens?

K&N Intake
MBRP 4" Turboback
Silverline 6" Black Aussie Stacks
Zoodad Mod
Ford Updated parts
BPD FICM
Blue Fuel Pressure Spring
ARP Head-studs
Stock Injectors?
AirDog 165 Fuel pump
EGR Delete
SCT Custom Tuner By Inovative Diesel 5 tunes
10" Lift
37" Toyo Open Country M/T
4.56 Gears
18" XD Thump Black Wheels
6.4 Banjo Bolts
Revised Ford Parts
Custom sound system
Glowshift Gauges Trans.Temp., EGT, Fuel Pressure
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post #3 of 5 Old 05-28-2013, 04:54 PM
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Normal! When you roll it in in overdrive, the TC is locked or close to it and it builds the boost due to the load. If you are slower and punch it, it downshift, and the TC is nowhere near locked so the truck senses less load on the engine and gives you less boost. It is all in the PCM and sensor parameters.

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Stiction Problems - Fix it yourself! - http://www.powerstroke.org/forum/gen...ml#post4509754
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post #4 of 5 Old 05-29-2013, 06:19 PM
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I can be running 65 to 70 and punch it, and it's not as loud, as if I punched it from like 35 to 40, but it is still loud though, but not as loud,, im straight piped 4 in from turbo all the way to the rear,,,,, how do you like your stacks, I have been thinking about it

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post #5 of 5 Old 06-01-2013, 04:34 PM Thread Starter
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I love them, they wake the dead.

K&N Intake
MBRP 4" Turboback
Silverline 6" Black Aussie Stacks
Zoodad Mod
Ford Updated parts
BPD FICM
Blue Fuel Pressure Spring
ARP Head-studs
Stock Injectors?
AirDog 165 Fuel pump
EGR Delete
SCT Custom Tuner By Inovative Diesel 5 tunes
10" Lift
37" Toyo Open Country M/T
4.56 Gears
18" XD Thump Black Wheels
6.4 Banjo Bolts
Revised Ford Parts
Custom sound system
Glowshift Gauges Trans.Temp., EGT, Fuel Pressure
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