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-   -   Turbo Boost What is the Maximum Boost that a 5.9, 275HP (https://www.irv2.com/forums/f123/turbo-boost-what-is-the-maximum-boost-that-a-5-9-275hp-225477.html)

shogun1940 11-03-2014 09:52 PM

Turbo Boost What is the Maximum Boost that a 5.9, 275HP
 
what is the maximum boost supposed to be?????

wirelessenab 11-04-2014 12:21 AM

The engine in my 97 Discovery is a so-called 98.5, 24 valve, 5.9L, ISB.

Max I see on VMSpc is 23.2.

Triker56 11-04-2014 07:21 AM

Around 23 PSI for the OEM, at one time Banks had a kit that came with a bigger turbo that does 33-34 PSI. They no longer have or sell that kit.

I have one but the Ottominder box went out. And is no longer available. :(

charles tuit 11-04-2014 08:36 AM

On my 02, 5.9, 275HP it is approximately 23 lbs when demand is heavy.

shogun1940 11-19-2014 05:23 PM

thanks guys ,,i am 19" max ,,i will try to adjust it

GreaTOne65 11-19-2014 10:45 PM

The boost on my 5.9 with the Banks system will touch 32-34 lbs. of boost from the 5-6 shift. If it is in the economy mode, 25-28.

Mr_D 11-19-2014 10:52 PM

Quote:

Originally Posted by Triker56 (Post 2296568)
Around 23 PSI for the OEM, at one time Banks had a kit that came with a bigger turbo that does 33-34 PSI. They no longer have or sell that kit.

I have one but the Ottominder box went out. And is no longer available. :(

I hope our Ottomind never gives out or we'll be in the same boat and I'll really miss the added power even with the bigger turbo left in place.

Mr_D 11-19-2014 10:53 PM

Quote:

Originally Posted by GreaTOne65 (Post 2317628)
The boost on my 5.9 with the Banks system will touch 32-34 lbs. of boost from the 5-6 shift. If it is in the economy mode, 25-28.

On our ISC with the Banks kit the boost always goes up to 34-35 PSI even when in economy mode.

GreaTOne65 11-20-2014 11:08 PM

That's very interesting, Mr.D. I was very cognizant of the boost this year, because of the threads I have read on IRV2. I have the Banks, pyrometer, and boost gauge, plus the scan-gauge. The scan-gauge doesn't show the same amount of boost the Banks gauge does, it is lower, at any given time, by about 3-4 lbs. I to am worried about my Ottomind losing it's mind. I wonder if another type of horsepower chip will work?

Oakviewjeff 11-30-2014 08:43 PM

My '99 Cummins boost max is 19. All stock except Diablo sports Power Puck. EGT is 1200 at 19 psi boost, so what is your EGT at 23?

Oakviewjeff 11-30-2014 08:47 PM

Sounds right for a 98.5 Cummins, watch your exhaust manifold temperature, before the turbo, should not exceed 1300 F


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