How much is Too Much Boost - Ford Powerstroke Diesel Forum

6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 13 Old 04-20-2010, 05:50 PM Thread Starter
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How much is Too Much Boost

I run the spartan 210 regular tune on my truck and when towing my trailer the other day i accelerated pretty hard from 50 - 75 to pass a car on the back roads and my boost gauge went to like 38 or so. Is that to much boost? Other than staying off the loud peddle what i can do to keep it safe?

08 350 Lariat CC LB
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post #2 of 13 Old 04-20-2010, 06:06 PM
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on my old 08 i towed on the 210 and i would max out the boost gauge never had a problem pulled like a raped ape 15k trailer

Vegistrokin
2000 XC 4x4

-CORY
Orlando, FL
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post #3 of 13 Old 04-20-2010, 06:21 PM
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57 psi broke the seal on my stock HG's.

Anything under 50 psi and I would say you are in the "safe" zone.

2008 FX4

Fabtech 8 w/37's

Intake, delete pipe/exhaust, Spartan/KEM tuning

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post #4 of 13 Old 04-20-2010, 06:24 PM
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pulling my toy hauler I'll see @ 38 psi stock!so I'd say you're fine!
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post #5 of 13 Old 04-20-2010, 06:32 PM
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i'd stay under 45 or you can be like me... hit 50 and hold it and puke coolant everywhere


2008 Ford F-250 6.4L
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post #6 of 13 Old 04-20-2010, 07:06 PM
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I keep it under 50psi when towing and have held it at 45psi and higher for...... a bit...

09 F350 CCLB FX4, FLO-PRO, S&B, SPARTAN

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post #7 of 13 Old 04-20-2010, 07:31 PM
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it'll hit 38 stock

2008 Ford F-250 - 6"-37s-H&S-deleted
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post #8 of 13 Old 04-21-2010, 07:15 AM
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Originally Posted by Dusten View Post
it'll hit 38 stock
yes on a good grade, the torque converter locked pulling my 5ver the boost gauge would read over 35 but below 40 & closer to 40 psi!The first time I did it was @ 1100 miles & blew the boost hose right off the turbo! this is on my '10 f350 bone stock!
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post #9 of 13 Old 04-21-2010, 07:25 AM
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I back off around 45 because it shoots up real quick after that. anything 55 or over starts to wear the bearings on your turbos.

08 F250 CC SB - too much to list

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post #10 of 13 Old 04-21-2010, 12:10 PM
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ya. headgaskets is what ya got to worry about. 50 pounds is too much for the stockers. trust me, i know...



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