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Old 10-13-2018, 03:35 PM   #1
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2003 E350 Boost Gauge Install

I have recently acquired a 2003 E350 7.3L with Advantura interior, SMB penthouse, and U-Joint 4x4 conversion. The rig has 118k and appears to lack power. I want to see if the turbo is working so I purchased a boost gauge. Does anyone have a recommendation on where I can tie in to get boost pressure?
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Old 10-13-2018, 10:01 PM   #2
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Find the MAP sensor on the upper firewall to the left of center. Tee into it there, it is the easiest place.

I can post a pic in the morning, if needed.
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Old 10-13-2018, 10:06 PM   #3
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When you say it lacks power? Compared to what?

You may want to pick up a ScanGauge2. Helps with info, also has boost reading off the OBD2, just not as accurate as a mechanical gauge since the scan gauge has no automatic allowance for change in air pressure resulting from altitude change.
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Old 10-13-2018, 10:27 PM   #4
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Thanks - I will do some research, but would always appreciate a pic. Fair point on "compared to what". The last 7.3L I owned was a 1999 Super Duty F250 with Banks exhaust (first truck I ever bought new). Heck that was 19 year ago. Maybe my recollection of the power/speed has been tainted through time.

BTW. Is it me or does it seem easier to swap a turbo on an E350 than change the fuel filter?

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Old 10-14-2018, 10:27 AM   #5
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I added a boost gauge a while ago in a 2 gauge pod mounted above the rear view mirror along with an EGT gauge, unfortunately I got one that goes up to 60, so it barely registers any movement unless I'm really on it, make sure you get one that only goes to 30-35 so that at least you'll see the needle move.....

The 7.3's in the van don't make a whole lot of boost, maybe it's just mine or where it's tapped in to? I see 8-10 in stock tune configuration, not sure what boost is supposed to be in the Econoline? Keep in mind, Ford detuned these for van use and will not see the same boost as in the trucks that would be around 15-17 I think.
check out this thread....
https://expeditionportal.com/forum/t...98-e350.61431/
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Old 10-14-2018, 10:33 AM   #6
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Here are the pics:
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Old 10-27-2018, 08:06 PM   #7
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@REF - got the gauge installed today and did a quick test drive. At 73 mph on a relatively level road, I pull ~7-8. I am at 4800' elevation. I went from a dead stop to freeway speeds with aggressive (not WOT) throttle and saw ~10-12. It is probably working as engineered. Thinking about a wicked wheel upgrade, but that will wait until 2019. I will post some pics tomorrow of my hose routing in case anyone is interested
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Old 10-28-2018, 08:04 PM   #8
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Hose routing was simple. I came off the MAP sensor into the cowl and ran the plastic hose to the driver's side where I drilled through the firewall. This gave me plenty of hose to make it to the driver side pillar. The hole into the cab was just below the driver side windshield wiper arm control. Rubber grommets to protect the plastic tube.
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Old 10-29-2018, 07:57 AM   #9
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What gauge pod mount did you use? I want to eventually put a pillar mount on my 96 but they seem hard if not impossible to find for the older years, I am guessing a newer model would still work fine, I have 2014 doors anyway so the color grey of those is a little different anyway.
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Old 10-29-2018, 08:49 AM   #10
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Autometer
15315 partial pillar 2 gauges (affixes to the existing pillar cover)
17315 full pillar 2 gauges (replaces the existing pillar cover)

These are #ís for 1992 to 2002. 2003 and newer driver pillar cover (and over the door plastic trim) became sculpted and added a grab bar.

Imho - 2 gauges on the pillar are manageable. 3 gauges creates a very large blind spot. I suggest mocking up a pc of cardboard on the pillar to get a feel for how large the blind spot is with two or three gauges.
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