Is a boost pressure gauge really usefull if I am NOT planning on putting in an adjustable boost pressure device, and NOT really interested in performance tuning enhancements. I can see that it may be interesting to see what the boost pressure is periodically, but I can do that diagnostic temporarily by installing a guage.

By comparison, I think a volt meter is most usefull to install permanently due to expected and more frequent failure of battery, alternator, voltage regulator, etc.

But the turbo in an MBZ diesel is a real long lasting work horse.

Note....this is an honest question...if i've got it wrong, let me know.....i'm just trying to figure out what additional gauges I should install for my own needs....at the current time, i'm thinking that for my purposes, only a voltage gauge is needed.

Thanks,

Mark

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1984 300TD Wagon, 407,800 mi (current daily driver)
1985 300DT Sedan, 330,000 mi (gone to that great autobahn in the sky)

MB obviously didn't think it was too important to install one. The vehicle is under at least partial boost most of the time, pretty much all the time during highway driving. Sure, I'd like to have one too, but obviously it's not a necessity. It's probably worthwhile though to attach one temporarily to see if things are working properly.

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'82 300SD - 361K mi - "Blue"

"Good judgement comes from experience. Experience comes from bad judgement."

listen, look, .........and duck.

I am not interested in performance boost either. However I've got plans to install the gauge because I think it's an important parameter to keep constant track. But yes you can live comfortably without it

EDIT: This gauge also keeps us informed about the present state of our vacuum system....

They are cheap and if you have less than normal boost you will be alerted to it....

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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
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Section 609 MVAC Certified
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

I don't see how measuring the boost pressure will tell you anything about the state of the vacuum system? The two are, well, rather completely unrelated.

A voltmeter is a good thing to have, oil temp would be nice too.

Kevin

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'85 300SD

KC is right. The boost and the vacuum system are totally unrelated.

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'85 300SD (formerly california emissions)
'08 Chevy Tahoe
'93 Ducati 900 SS
'79 Kawasaki KZ 650
'86 Kawasaki KX 250
'88 Kawasaki KDX200
'71 Hodaka Ace 100
'72 Triumph T100R