Boost @ 42 psi? - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 11 Old 01-30-2011, 11:45 PM Thread Starter
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Boost @ 42 psi?

Hey guy's'
I was watching my boost on the way home from work, and wanted to see how high it would get with the HOT TUNE at WOT. How high is too high for boost? Cuz it peaked out at 42psi. Thats what the maxx recorded. I'm still trying to relearn how to drive this beast. Having lots of fun, like yall all said, it is like getting a new truck. My 6.0 with SCT cant even come close to my 6.4 on da flo.

2009 F350 Lariat Loaded LWB 4X4.

4.5 CST lift
KMC XD Series Spy
H&S Mini Maxx
Diamond Eye DPF/Cat Delete
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post #2 of 11 Old 01-31-2011, 05:07 AM
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I've hit 58 with some older Spartan tunes

08 F250 CC, 4x4, Blue/Pueblo Gold, 3.73, S & B CAI, 5" Magnaflo downpipe back, Spartan TCM 275 & 310 KEM 345 (SCT - Sold) Mickey Thompson 35 12.5 20's

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post #3 of 11 Old 01-31-2011, 06:52 AM
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Originally Posted by drservo View Post
I've hit 58 with some older Spartan tunes
I would be thinking about headstuds at that point.......

2010 Black F250 Diesel 4x4 CCSB
2007 Black Z06

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post #4 of 11 Old 01-31-2011, 09:52 AM
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42 psi is only a little more than what a stock truck can make. 50+ is when you should back off.

Jeff Dodd
spartan_jeff12@yahoo.com

2012 Ford F-250 Lariat CC/SB

Mods - Spartan tuned via laptop, 4" AFE stainless exhaust system, 2.5" PMF BMC leveling spacers, 3" PMF lift blocks, Fox Racing 2.0 shocks, Recon smoked mirror & cab lights
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post #5 of 11 Old 01-31-2011, 02:21 PM
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So your saying 60 with the 310 tune is bad? Heads have not fallen off yet lol.

2008 F-250 6.4 Auto, CC,SB,FX4, 2" lift, 285/65/20, Spartan tuning, Elite studs, Elite egr delete/wastegate, Elite push rods, Spearco Intercooler, cold side pipe,CFM, 4"down pipe,Custom 5" DP back exhuast 543HP/1231 ft-lbs
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post #6 of 11 Old 01-31-2011, 02:30 PM
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Mother of God! I get scared when my boost gets to 38psi let alone 58!!

2010 6.4L CCLB
2007 6.7L QCSB
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post #7 of 11 Old 01-31-2011, 02:50 PM
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C'mon you have 2 turbos 50psi should be no problem. Stock they make 38-42 so 50 should be a piece of cake.

2002 f250 BFT Edition


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post #8 of 11 Old 01-31-2011, 03:10 PM
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The most boost I have ever hit was 56 psi, and that was with an old 310 test file. I had just done a 4" downpipe upgrade and went out on the highway to test boost out, rolled in to it, and my mechanical gauge showed me 56 psi and held for a second. When I stopped, my truck had puked quite a bit.

Our new tunes won't hit that kind of boost so easily.

Jeff Dodd
spartan_jeff12@yahoo.com

2012 Ford F-250 Lariat CC/SB

Mods - Spartan tuned via laptop, 4" AFE stainless exhaust system, 2.5" PMF BMC leveling spacers, 3" PMF lift blocks, Fox Racing 2.0 shocks, Recon smoked mirror & cab lights
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post #9 of 11 Old 01-31-2011, 06:07 PM Thread Starter
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Quote:
Originally Posted by 08stroker250 View Post
42 psi is only a little more than what a stock truck can make. 50+ is when you should back off.
Thanks Jeff,
I just tuned the truck, so this is all still new to me, on how high these gauges can ran at a safe permeter.

2009 F350 Lariat Loaded LWB 4X4.

4.5 CST lift
KMC XD Series Spy
H&S Mini Maxx
Diamond Eye DPF/Cat Delete
AFE Stage II Intake
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post #10 of 11 Old 01-31-2011, 08:17 PM
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A brake boosted roll on from 75mph gets me 60psi for a little and then it drops back to 56. Does not puke a drop as long as I am full throttle. I am planning studs, egr delete/ waste gate soon.

I try to keep it under 40 towing.

2008 F-250 6.4 Auto, CC,SB,FX4, 2" lift, 285/65/20, Spartan tuning, Elite studs, Elite egr delete/wastegate, Elite push rods, Spearco Intercooler, cold side pipe,CFM, 4"down pipe,Custom 5" DP back exhuast 543HP/1231 ft-lbs
Everything from Sean at Street diesel performance
http://s601.photobucket.com/albums/t...0Ford%20F-250/

Last edited by Ipkyss; 01-31-2011 at 08:21 PM.
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