Boost gauge installation - Chevy Colorado & GMC Canyon
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post #1 of 29 (permalink) Old 03-27-2017, 02:27 PM Thread Starter
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Boost gauge installation

Where is the best place to tap for a boost gauge?

Also, being my first diesel, is there any reason for vacuum on the boost gauge? Meaning, should I just get boost pressure and not vacuum?

2016 Colorado LT Diesel
Red Rock, Sports bar, Black 5" assist steps, EGT and Boost Gauge with custom bezel mount
AFE Magnum Intake and Bladerunner Hot/Cold side Kit
Duramaxtune DSP-4 Tuning
AFE Rebel side exit turbo back w/ Black tips


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post #2 of 29 (permalink) Old 03-27-2017, 02:36 PM Thread Starter
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I have the AFE Hard pipe, my experience with Gas motors is you need to be post throttle blade, but I guess with the diesel and the full delete this wouldn't be necessary. The Hard pipe already has threaded bungs I could remove and use that, would make it easy. My experience post turbo pre-TB is you always see boost, so vacuum didn't make much sense, but with the Diesel not having a TB (I know we do, but post delete it will remain open) not sure what the pressure/vacuum situation looks like

Thoughts?
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2016 Colorado LT Diesel
Red Rock, Sports bar, Black 5" assist steps, EGT and Boost Gauge with custom bezel mount
AFE Magnum Intake and Bladerunner Hot/Cold side Kit
Duramaxtune DSP-4 Tuning
AFE Rebel side exit turbo back w/ Black tips



Last edited by mrpositraction; 03-27-2017 at 02:50 PM. Reason: Added clarity
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post #3 of 29 (permalink) Old 03-27-2017, 03:17 PM
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My previous experience with TDI has the tap point in the IC pipe just before the intake body or in the intake (throttle) body itself. I would think it would be the same on the 2.8. Either location will work but in the body itself may interfere with the shut down flap unless it is deleted which isn't a good idea.

2017 Canyon SLT. Crew cab, 2.8L Duramax, 4WD, Silver/Cocoa.
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post #4 of 29 (permalink) Old 03-27-2017, 04:48 PM
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With a wide open TB I can't see why the pipe wouldn't be fine. No need for vacuum on the gauge. I think I've seen 1-2 inches of vacuum max on my truck.
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2016 CCSB Duramax

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post #5 of 29 (permalink) Old 03-28-2017, 08:35 AM Thread Starter
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Here are the gauges I ordered. I originally went with green as the night glow but our dash is more blue (not green at all after driving in this morning)

2016 Colorado LT Diesel
Red Rock, Sports bar, Black 5" assist steps, EGT and Boost Gauge with custom bezel mount
AFE Magnum Intake and Bladerunner Hot/Cold side Kit
Duramaxtune DSP-4 Tuning
AFE Rebel side exit turbo back w/ Black tips


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post #6 of 29 (permalink) Old 03-28-2017, 08:36 AM Thread Starter
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I also confirmed I have 1/8" NPT ports on both the hot and cold side of the AFE pipes, this will make install very easy.

2016 Colorado LT Diesel
Red Rock, Sports bar, Black 5" assist steps, EGT and Boost Gauge with custom bezel mount
AFE Magnum Intake and Bladerunner Hot/Cold side Kit
Duramaxtune DSP-4 Tuning
AFE Rebel side exit turbo back w/ Black tips


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post #7 of 29 (permalink) Old 04-06-2017, 12:40 PM Thread Starter
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I just updated my boost gauge to 45 psi. After purchasing an OBDII Dongle and OBD Fusion I have seen boost over 30 psi (I have Duramaxtuner and AFE intake and bladerunner kit, not sure if that matters). I have also read with certain scenarios you can see boost higher than that. Since I didn't want my boost gauge topping out at 30psi and not knowing what it was doing, I decided to change it. I also (before this) changed the background during night time to be blue instead of green.
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File Type: png Speedhut final EGT and Boost gauge order.png (64.1 KB, 58 views)

2016 Colorado LT Diesel
Red Rock, Sports bar, Black 5" assist steps, EGT and Boost Gauge with custom bezel mount
AFE Magnum Intake and Bladerunner Hot/Cold side Kit
Duramaxtune DSP-4 Tuning
AFE Rebel side exit turbo back w/ Black tips


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post #8 of 29 (permalink) Old 04-06-2017, 02:12 PM
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I've seen mid to upper 30s with a small trailer. Never over 26ish just the truck though

2016 CCSB Duramax

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post #9 of 29 (permalink) Old 04-06-2017, 02:15 PM
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My problem is where to mount the gauge?








I have an Aeroforce Gauge I used in my Turbo HHR and I would like to use it in the GMC. No one makes a good pillar pod or gauge pod for these trucks yet. Has anyone found a viable pod?
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post #10 of 29 (permalink) Old 04-06-2017, 02:31 PM
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Quote:
Originally Posted by hyperv6 View Post
My problem is where to mount the gauge?

I have an Aeroforce Gauge I used in my Turbo HHR and I would like to use it in the GMC. No one makes a good pillar pod or gauge pod for these trucks yet. Has anyone found a viable pod?

I think the one MrP bought was originally sourced from here:

CHEVROLET - Ortiz Custom Pods

vi et armis invictus maneo..
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post #11 of 29 (permalink) Old 04-06-2017, 02:59 PM Thread Starter
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Originally Posted by Thunderbear View Post
I think the one MrP bought was originally sourced from here:

CHEVROLET - Ortiz Custom Pods
I bought mine used from a member on here, but that looks like it! You can also get them on eBay, probably this seller selling on eBay

2016 Colorado LT Diesel
Red Rock, Sports bar, Black 5" assist steps, EGT and Boost Gauge with custom bezel mount
AFE Magnum Intake and Bladerunner Hot/Cold side Kit
Duramaxtune DSP-4 Tuning
AFE Rebel side exit turbo back w/ Black tips


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post #12 of 29 (permalink) Old 04-06-2017, 03:01 PM Thread Starter
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Originally Posted by onebaddz View Post
I've seen mid to upper 30s with a small trailer. Never over 26ish just the truck though
Using the OBD Fusion, encountering a small hill and the right amount of throttle I have seen over 30 (hell just in town during lunch I hit 28psi). I haven't played enough to know what "sustainable" boost is but I do want the ability to see the spikes as well.

2016 Colorado LT Diesel
Red Rock, Sports bar, Black 5" assist steps, EGT and Boost Gauge with custom bezel mount
AFE Magnum Intake and Bladerunner Hot/Cold side Kit
Duramaxtune DSP-4 Tuning
AFE Rebel side exit turbo back w/ Black tips


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post #13 of 29 (permalink) Old 04-06-2017, 06:56 PM
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Thanks I e mailed them and asked if they had plans for a single pillar pod for gauges as there is a booming Diesel engine in this model now and no one makes one.

For what is worth I was hitting 23 PSI with my Ecotech turbo and it was only limited by altitude and a weak trans axle. That was on pump gas. It is amazing to see such high boost pressures today. Turbo engines are amazing gas of Diesel.
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Last edited by hyperv6; 04-06-2017 at 06:58 PM.
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post #14 of 29 (permalink) Old 04-06-2017, 07:55 PM Thread Starter
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Here is from a stand still on flat ground. (FOCUS ON THE RED MARKS ON GAUGE FOR MAX)

Check out those EGT eeeeeeeek

2016 Colorado LT Diesel
Red Rock, Sports bar, Black 5" assist steps, EGT and Boost Gauge with custom bezel mount
AFE Magnum Intake and Bladerunner Hot/Cold side Kit
Duramaxtune DSP-4 Tuning
AFE Rebel side exit turbo back w/ Black tips


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post #15 of 29 (permalink) Old 04-14-2017, 07:08 AM
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Quote:
Originally Posted by mrpositraction View Post


Here is from a stand still on flat ground. (FOCUS ON THE RED MARKS ON GAUGE FOR MAX)

Check out those EGT eeeeeeeek
That EGT reading is worthless and not picking up temp from the right place.. None of the obd EGT sensors can be used for anything except monitoring a regen to see its progress through the stages. Also, the boost you are seeing is not gauge pressure, it's absolute. So if you're seeing 30psi for example, subtract baro of let's say 14.5 and you're left with 15.5... The boost tables stock are written to max around 26psi(gauge) which would be about 39.5(absolute)

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post #16 of 29 (permalink) Old 04-14-2017, 08:06 AM Thread Starter
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[QUOTE=hacklerjason;4214633]That EGT reading is worthless and not picking up temp from the right place.. None of the obd EGT sensors can be used for anything except monitoring a regen to see its progress through the stages. Also, the boost you are seeing is not gauge pressure, it's absolute. So if you're seeing 30psi for example, subtract baro of let's say 14.5 and you're left with 15.5... The boost tables stock are written to max around 26psi(gauge) which would be about 39.5(absolute)

Sent from my LG-H918 using Tapatalk[/QUOTE

Well then I guess I have room on my 45psi boost gauge for a future turbo LOL
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2016 Colorado LT Diesel
Red Rock, Sports bar, Black 5" assist steps, EGT and Boost Gauge with custom bezel mount
AFE Magnum Intake and Bladerunner Hot/Cold side Kit
Duramaxtune DSP-4 Tuning
AFE Rebel side exit turbo back w/ Black tips


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post #17 of 29 (permalink) Old 04-14-2017, 08:48 AM
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I contacted the Ortiz pod maker and he said he can do a single pillar pod for the 2015-17 trucks. $139.
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post #18 of 29 (permalink) Old 04-17-2017, 12:18 PM Thread Starter
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Originally Posted by hacklerjason View Post
That EGT reading is worthless and not picking up temp from the right place.. None of the obd EGT sensors can be used for anything except monitoring a regen to see its progress through the stages. Also, the boost you are seeing is not gauge pressure, it's absolute. So if you're seeing 30psi for example, subtract baro of let's say 14.5 and you're left with 15.5... The boost tables stock are written to max around 26psi(gauge) which would be about 39.5(absolute)

Sent from my LG-H918 using Tapatalk
Was thinking about this, if this was the case, wouldn't I see 14.5psi on my digital gauge at idle (assuming very little vacuum reported by others)? The scaling could be off, but it isn't a straight line subtraction of atmospheric pressure.

2016 Colorado LT Diesel
Red Rock, Sports bar, Black 5" assist steps, EGT and Boost Gauge with custom bezel mount
AFE Magnum Intake and Bladerunner Hot/Cold side Kit
Duramaxtune DSP-4 Tuning
AFE Rebel side exit turbo back w/ Black tips


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post #19 of 29 (permalink) Old 04-17-2017, 12:39 PM
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There are PIDs for both absolute pressure as well as just boost pressure in OBD Fusion.

2016 CCSB Duramax

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post #20 of 29 (permalink) Old 05-03-2017, 02:05 PM Thread Starter
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FINALLY! Got my gauges. To be fair, I changed something on the order 3 times and evertime added not only cost, but lead time.

I really enjoy working with Speedhut. My gauges were in production already when I made my 1st change, and it was only a $12 charge to make the change I want when they could have easily said nope, you get what you originally ordered.

I need to figure out how to make the gauges to stop from spinning in the holders (likely use electrical tape around the threaded portion of the gauges until it is a snug fit, once in place, there is nothing to really move them. My AFE Cold Side piping already has a threaded bung for the boost so that is easy. EGT will take the place of the EGT sensor in the stock manifold once I am deleted, again, with the right parts, is easy. Just need to find a switched power source and an "interior light 12V" source to operate the lights on these and I should looking good.
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2016 Colorado LT Diesel
Red Rock, Sports bar, Black 5" assist steps, EGT and Boost Gauge with custom bezel mount
AFE Magnum Intake and Bladerunner Hot/Cold side Kit
Duramaxtune DSP-4 Tuning
AFE Rebel side exit turbo back w/ Black tips



Last edited by mrpositraction; 05-03-2017 at 02:09 PM.
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