Boost ?
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Senior User
Joined: Feb 2003
Posts: 333
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From: Idaho
Boost ?
I have read several posts about boost pressure and I am still confused a bit. I have the diablo predator with gauges on my PSD. I don't have any other mods. I am planning on a new intake and larger diameter exhaust. Anyway, with the 60 and 80 HP programs, I am getting about 20 on the boost gauge when I punch it from a slow roll. Is this normal or should I expect more?
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Joined: Sep 2003
Posts: 2,630
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From: North East Ohio
Stock about 17 psi.
Open element filter and bigger exhaust about 18 to 20 psi.
Chip in the upper 20's.
Injectors in the upper 30's.
Upgraded turbo in the 40's.
Twin turbos upwards of 60.
Open element filter and bigger exhaust about 18 to 20 psi.
Chip in the upper 20's.
Injectors in the upper 30's.
Upgraded turbo in the 40's.
Twin turbos upwards of 60.
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'96 7.3 F-350 Reg Cab 4x4 - bought new.
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Senior User
Joined: Nov 2003
Posts: 331
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From: Abilene TX
I can get over 30 on the 85 and 100 hp settings, and i get the dad gummed light everytime. I ran the diode and don't get the overboost condition anymore but rather an excessive backpressure code. I don't know how to fix that yet??
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Joined: May 2001
Posts: 13,653
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From: Cabot, Arkansas
I ran the diode and don't get the overboost condition anymore but rather an excessive backpressure code. I don't know how to fix that yet??
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Joined: May 2001
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From: Cabot, Arkansas
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Elder User
Joined: Feb 2003
Posts: 673
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From: Virginia
on my truck before i made my intake, i would only get maybe 20 psi boost on the 60 hp program. When i make my intake, it bumped it up to about 22psi. I think it did that partly because of the intake letting in more air, but primarly because the stock intake was so restrictive (not the filter). I noticed that the intake snout was prety much up against some rubber under the hood, more then likely restricting the intake.
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