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Old 06-17-2015, 07:34 AM   #1
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Scan Gauge Boost

I just installed the Scan Gauge D abd have not had a chance yet to use it on the road.

My question is this. What boost should I see on the gauge?

RV is --- 2000 Fleetwood America Eagle
Engine -- Cummins 350 ISC

I am sure someone with a similar vintage ISC should have an idea what they see at idle?-- and when driving a some RPM/LOAD ?

I can see the gauges will be useful and worthwhile.

thanks -- Dale

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Old 06-17-2015, 07:38 AM   #2
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On our 350 we run up to 25 going up hill and freeway speeds on cruise about 9-10.

Just installed the Scan Gauge D yesterday.....LOVE IT!

My trans gauge had not worked in a while. Now I have Trans, Water, Oil pressure and volts in digital, at a glance.

2007 Alpine Limited SE
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Old 06-17-2015, 07:46 AM   #3
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The boost gauge will be affected by the air filter, clean or dirty. As for the expected boost I can not be of any help as I have a different engine. But I do like my Scangauge D.
American Tradition 42R-Cadillac SRX Blue Ox Koni 5050XL MCD Scangauge D Samsung rf197
Fulltime since 2012
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Old 06-17-2015, 01:03 PM   #4
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There's a post on the Cummins forum about boost pressure on an ISC 350, it looks like 22-24 is about it.
Jim J
2002 Monaco Windsor 38 PKD
2005 Jeep Grand Cherokee w/5.7 Hemi
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Old 06-17-2015, 01:39 PM   #5
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Thanks for the replies == Now I have some idea what to expect at least.
I also have a brand new air filter.

I am assuming that my couple of tenths of boost is normal for idle?

thx === Dale
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