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post #1 of 7 Old 09-28-2012, 11:12 AM Thread Starter
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Boost Defuel?

I have an 08 job 3 with an H&S mini maxx HD 300, 5" turbo back, S&B cai and egr delete. I was wondering what the ideal defuel would be for the boost? I have read numerous posts and everyone is saying something different - some say 38psi and i've seen some people running 45psi. I want to run the highest but safest setting as i dont want to blow the HG. I am currently running it at 38psi but it defuels within 2 seconds of getting on the pedal so I run out of power to quick. Any input is appreciated thx.
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post #2 of 7 Old 09-28-2012, 11:45 AM
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Alot of people run it at 38-40 psi defuel and just turn it off if they want to play. After playing they just turn it back on. As for a safe number, 38 would be a safe number.

08 F350 JOB 1
H&S MINI MAXX HD300 W/S1M
SINISTER EGR/COOLER DELETE
6000K BEAMERS HID HEAD & FOGLIGHTS
KMC XD WHEELS W/NITTO TRAIL GRAPPLERS
2.5" LEVELING KIT
DIESELSITE COOLANT FILTER
ROTELLA EC-1 RATED COOLANT
5" DP BACK FLO-PRO EXHAUST
FLO-PRO CAC PIPE & INTAKE ELBOW
CCV MOD
AIR LIFT 5000LB AIR BAGS W/ONBOARD COMPRESSOR
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post #3 of 7 Old 09-28-2012, 07:10 PM
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I think mine is set at 45psi. I still defuel within seconds and even faster when cruising then going to WOT to pass.

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post #4 of 7 Old 09-28-2012, 09:20 PM
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iv hit 52psi and have had no issues. when i sled pull i normally hold 50-52 the whole way down the track
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post #5 of 7 Old 09-29-2012, 06:33 AM
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Originally Posted by drhoades3862 View Post
iv hit 52psi and have had no issues. when i sled pull i normally hold 50-52 the whole way down the track
That's good to know. Do you have another other upgrades than the big 3?

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post #6 of 7 Old 09-29-2012, 03:29 PM Thread Starter
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I'm to scared to run it up to 52psi. I had it previously set to 42psi and it puked on me. Brought it in to the dealer and they said they tested it 4 times and couldn't find any issues with it.


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2008 F250 XLT 4X4
H&S Mini Maxx
S&B CAI
5" Turbo Back Diamond Eye Exhaust
Sinister EGR Delete
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Fabtech Dual Steering Stabilizer
6" Pro Comp Lift
37x13.5-20 Toyo Open Country MT
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post #7 of 7 Old 09-30-2012, 03:34 PM
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Quote:
Originally Posted by bigt2317 View Post
That's good to know. Do you have another other upgrades than the big 3?
Exhaust, Mini Max, CAI, EGR delete with wastegate and intake elbow, built tranny, Batmowheel in the low pressure. Head Studs and different turbos this winter
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