How much boost should a stock setup make? - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 02-16-2013, 07:11 PM Thread Starter
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How much boost should a stock setup make?

I am running whats in my sig. And have my boost gauge in the MAP line. Have a slight up pipe leak but not audible. With the edge on 100 HP setting boost shoots straight up to 20 lbs and then stops or surges (I think thats what i hear).
Does this sound right? Can't find a def. answer on what stock injectors and turbo make for boost.

00 Ex Cab LB, 145k Miles, Built 4R100, 4 in exhaust, S&B cold air intake, FRx, PHP Hydra, WW2, Bellowed up-pipes, ISSPRO gauges, 203* thermostat, 305/70/R16

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post #2 of 12 Old 02-16-2013, 07:20 PM
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Originally Posted by strokenred97 View Post
I am running whats in my sig. And have my boost gauge in the MAP line. Have a slight up pipe leak but not audible. With the edge on 100 HP setting boost shoots straight up to 20 lbs and then stops or surges (I think thats what i hear).
Does this sound right? Can't find a def. answer on what stock injectors and turbo make for boost.
With leaky up pipes and canned tunes, 20 PSI isn't bad at all. A good custom tune will usually be in the 24-28 PSI. Maybe 30 PSI+. Depends on a lot of things... Condition of the injectors and HPOP.

Alan
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post #3 of 12 Old 02-16-2013, 08:11 PM Thread Starter
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thats kinda what I was thinking, but just wanted to make sure. I will be ordering the PHP Hydra soon along with bellowed up pipes and maybe WW2. Wanted to make sure I was making ok boost with what I have so far

00 Ex Cab LB, 145k Miles, Built 4R100, 4 in exhaust, S&B cold air intake, FRx, PHP Hydra, WW2, Bellowed up-pipes, ISSPRO gauges, 203* thermostat, 305/70/R16

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post #4 of 12 Old 02-16-2013, 08:50 PM
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In our altitude (I'm in Colorado Springs) 20-24 is all a 7.3 will make... With stock turbo

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post #5 of 12 Old 02-17-2013, 05:26 PM
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I have a leak in my up pipes as well and on the tuner i get 23psi before the needle wiggles up and down i went up from 19psi to 23psi by unpluging the waste gate actuator. Sad thing is the old mans 7.3 gets 18psi stock and i get around 11psi when i run stock.

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post #6 of 12 Old 02-18-2013, 08:22 AM
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with the mods in my sig, with the superchip on the milage xs tune, what should I be running with the 38r? I dont have my boost gauge in yet Ive been pretty busy plus its cold here and Im a sissy Just wondered what numbers I should be seeing once i get the gauges in.

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post #7 of 12 Old 03-04-2013, 09:42 PM
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22-30 PSI .

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post #8 of 12 Old 03-05-2013, 09:26 AM
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How much boost should a stock setup make?

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2003 F250 XLT 6Spd 4X4 ECLB 4" lift 4" turbo back duals, AFE Stage 2 XP, superchips flashpaq (gone soon I hope) GTP38R, Gutted EBPV
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post #9 of 12 Old 03-05-2013, 09:49 AM
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dont mean to steal your thread or anything but how much boost is safe for the engine with out effecting reliability too much?
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post #10 of 12 Old 03-05-2013, 03:56 PM
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No real answer for that.

Over 40 PSI and you start pushing the limits of the stock valve springs. Over 35-40 PSI and the stock turbo life will be shortened. WW G2 might be the exception to this. I'd seriously think about studs around 40 PSI as well.

Alan
2000 F-350 CC LB DRW 4x4 XLT Auto

- Intake
- Exhust
- ScanGauge
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