I don't have the econogauge fix done - that was jbaj007's idea.

The location for measuring turbo boost is here if that helps.

My home page uses java for the menu - do you have java script enabled on your browser? What is Mozilla, by the way?

Where are these ports?

__________________
"Know other lessons I need to learn? TELL me. Tired of learning'em the hard way".

Glow Plug Wait: [i} Time of silence in homage Rudolph Diesel. Longer you own a diesel. more honor you give". [/i]

Life; SNAFU Situation Normal All Fouled Up, & FUBAR: Fouled Up Beyond All Repair

-Now: Snafued Jeep TJ w/OM617 2Be daily driver & building SS M1079 w/Ambo boxed /live in Adv. Truck, Diesel KLR conversion
-Sold 62 UNIMOG Camper w/617 Turbo, 85 300SD

I used the stock fitting from my chepo $20 boost gauge kit from pep-boys on the "plug" below the overboost sensor. It fit perfectly with no troubles yet!

I was wondering if that was a port too? I posted that question on here some time back too actually.. Anyway.. glad ya said something. Now I know fer sur...

I pulled the alda banjo bolt out of the junker today while at the bone yard hoping I could put it into that spot. I snagged a Y off the junker too though, just in case.

__________________
"Know other lessons I need to learn? TELL me. Tired of learning'em the hard way".

Glow Plug Wait: [i} Time of silence in homage Rudolph Diesel. Longer you own a diesel. more honor you give". [/i]

Life; SNAFU Situation Normal All Fouled Up, & FUBAR: Fouled Up Beyond All Repair

-Now: Snafued Jeep TJ w/OM617 2Be daily driver & building SS M1079 w/Ambo boxed /live in Adv. Truck, Diesel KLR conversion
-Sold 62 UNIMOG Camper w/617 Turbo, 85 300SD

I think he is thinking of using it as a gauge to monitor the vacuum system, not economy.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

Is it normal for the gauge to react really slowly? It's pegged at exactly 13psi but it takes 3 seconds to return to the other peg when boost goes away.

My VDO gauge works pretty quickly...boost won't go away instantly, it takes a while for it to simmer back down if you are in 3rd or 4th gear. Boost will go away quick I suppose if I goos it in 1st gear and let off. But your gauge should be pretty responsive. I've got the 85 CrAp emissions model, can't remember which turbos those have.

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1985 CA 300D Turbo , 213K mi

I guess I should have said it responds slowly going up and down. By the time my normal boost gauge is at 13psi, the cluster gauge is barely half way.

Some gages have built in "Pressure Snubbers"........if you look at the inlet connection, and there is a screw inside, back it off a half turn or so.....

Pressure Snubbers are to minimize pressure fluctuations, and keep the pointer from vibrating (sort of!).......and by keeping pointer fluctuations to a minimum they prolong the life of the moving parts within the gage.....

FYI......always select a gage that will read normal operating pressure at it's midscale....so if you wanna read 15psi....use a 30psi gage....

SB

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Diesels:
'85 300D, "Max, Blue Benz", 155K, 27.0 MPG
'84 190D 2.2, "Eva, Brown Benz", 142K, 40.2 MPG
'77 240D (parts car)
'67 Eicher ES 202 Tractor "Otto" (2cyl, Air Cooled, 30HP)
Gassers:
'94 Ford F-150, "Henry", 170K (300 Six) 17.5 MPG
'85 190E 2.3, 148K....Parts Car
'58 Dodge W300M Powerwagon (Flat Fenders) Less than 10 MPG

The pointer is probably overdamped for use as an absolutely real time boost gauge. Ask mj_sid if he notices the same thing in the SDL boost gauge.

Sixto
93 300SD

Just a possibility on the slow responding gauge. Is there any chance you have carbon plugging the line, or a crimp in the line to the gauge?
Either of these could add damping to the movement without cutting pressure, if they were not completely blocking airflow.

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-Josh
Testing the cheap Mercedes axiom, one bolt at a time...

i have a pillar pod guage on my truck with boost exhaust temp and tranny temp But i tow 10-12000 lbs down the road isnt this overkill on the car?

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commercial fisherman diesel in my blood in my boats trucks and Dear old Dad has had me drivin them since i got my first license in 1968
1986 300 SDL 427654
1999 Chevy Crew Cab Dually 225423
1986 300 SDL 287000 Dad's
1987 190 Turbo 158000 Mom's (my inheritance)