35 psi boost - Ford Powerstroke Diesel Forum
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post #1 of 78 Old 02-09-2008, 01:23 AM Thread Starter
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35 psi boost

my buddy has an 05 common rail cummins completely stock... just hooked up his egt and boost gauge today, and of course we had to test them out so we took it for a little spin... COMPLETELY STOCK and he's putting out 35 psi already... insane. i guess i can say i'm somewhat jealous because my PSD has mod's and i'm maxing out at 25 psi...

'97 F250 HD PSD, 4x4, Auto, Ext Cab, LB, 4" Lift, Tint, 80/120 hp DP Tuner, Straight Piped, AFE Stage 2 Air Intake w/ Pro-Guard 7, Aftermarket Intercooler, SpecRite Dual Disk Torque Converter, Pumped Up Tranny w/ Transgo Kit, MagHytec Deep Tranny Pan, Pyro, Boost and Tranny Temp Autometer Gauges, Pro Comp Adjustable Shocks, 305/70/16 BFG Mud Terrains on Weld Rims, Spray on Bedliner, Flip Down DVD Player
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post #2 of 78 Old 02-09-2008, 04:01 AM
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I wouldn't sweat it...I put less boost out now with it being tuned.

Every setup is different.

Eric
2007 F250 6.0l King Ranch CC LB
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post #3 of 78 Old 02-09-2008, 04:52 AM
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Eric is right.. but have you unplugged your wastegate? you will gain some just by doing that.. I unplugged mine the other week once I got my new clutch in... I was never able to get up to 24psi... but Thursday when I was coming home I laid into it real quick and got up to 25.3 psi.. and then I let out of it.. not for sure yet how high she will go but will find out soon...

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post #4 of 78 Old 02-09-2008, 04:56 AM
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More boost doesn't mean he's got more power. I wouldn't worry about it either.

Looking for 05-07 front end with Harley Lights
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post #5 of 78 Old 02-09-2008, 05:05 AM
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i have seen 24 for boost on mine, and friends PSD so will run a little higher boost some lower, so many variable. Plus if i recall right i think a cummins does run more boost than ours normally

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post #6 of 78 Old 02-09-2008, 06:03 AM
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I wouldn't want that much boost, I'd worry too much about the head studs. I love my SCT custom tunes, more power with less boost.

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post #7 of 78 Old 02-09-2008, 06:22 AM
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so you guys are saying that by unplugging that little red wire on the waste gate actuator(sp) that it will give me a little more boost????


2003 7.3L
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post #8 of 78 Old 02-09-2008, 06:41 AM
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Boost is not that important. My truck actually hits peak power before I hit peak boost level. With all the mods I have, I still only see about 27 psi max. On a side note, a 1.0 housing is great fro our trucks running stock injectors. It will help increase bottom end air flow and give a little higher boost on top end.

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post #9 of 78 Old 02-09-2008, 06:49 AM
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Quote:
Originally Posted by GoldieStroker944 View Post
so you guys are saying that by unplugging that little red wire on the waste gate actuator(sp) that it will give me a little more boost????
yes you will if you do unplug it... I and others think that it does spool up just a little quicker also

RYAN
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post #10 of 78 Old 02-09-2008, 06:51 AM
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ok thanks do i need to plug the little hole on the actuator??? if you could pm me and let me know what it actualy does that would be great


2003 7.3L
Crew Cab Short box
Lariat
Cowl (functional)hood
315/75-16 wild coutry A/T's
Hypertech power programmer 3
T.S 6pos
stock,high idle,50,75,100,140
AFE stage 1
Foil delete
MBRP Cool Duals 6" tips
Sirius sat radio
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