Vgt actuator calibration help - Dodge Cummins Diesel Forum
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post #1 of 39 (permalink) Old 08-29-2017, 04:00 PM Thread Starter
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Vgt actuator calibration help

I just re installed my modified vgt back on the truck and the veins are moving up and down searching. Apparently it needs to be recalibrated which I was told it did not. Anyway I am looking for a little advice from someone who has done this. I saw this can be done with a snap on scanner. I am wondering if the actuator has to be removed from the truck or can it just be left on. Any advice is much appreciated


16 mega 4x4, revmax valve body, arp 625, hpp efi, 64/70 vgt
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post #2 of 39 (permalink) Old 08-29-2017, 10:25 PM
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The actuator must be removed from the turbo but not completely from the truck since you're need to communicate with it through the OBD2 port. You're not really calibrating the actuator itself, you calibrating the actuator to the turbo vane position.
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post #3 of 39 (permalink) Old 08-29-2017, 10:28 PM
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yep, set the actuator arm to middle position, bolt it to the turbo, Pass command
Quote:
lo_byte, hi_byte, 0x02, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF

It will cycle from full closed to full open and "calibrate" those positions.

this can be done via a good scan tool like the snap on or with an arduino and a canbus shield and some code I posted awhile back
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post #4 of 39 (permalink) Old 08-29-2017, 10:39 PM Thread Starter
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Found a local shop here with a snap on scan tool. Going to give it a go tomorrow

16 mega 4x4, revmax valve body, arp 625, hpp efi, 64/70 vgt
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post #5 of 39 (permalink) Old 08-29-2017, 10:46 PM
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This isn't necessary. Let me dig up my previous post and link it

1998 12v, 4x4, Club Cab, Carli, Thuren, BlueTop, Core 4x4, BD Diesel, PDD 5x.012, South Bend
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post #6 of 39 (permalink) Old 08-29-2017, 11:26 PM
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This article covers the process of making your own Turbo calibrate tool for less than $75. If the actuator comes off the turbo you really should calibrate it.

https://mopar1973man.com/cummins/art...ntroller-r531/
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post #7 of 39 (permalink) Old 08-29-2017, 11:43 PM
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I can't find the pics and cannot get them to load. Leave the ignition off and pull the actuator without unplugging it. Set the gear almost all the way to the back but line up the hole in the gear with the indentation in the actuator. Done! Put it back on and your good to go. I have done two like this without fancy tools and no problems .

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post #8 of 39 (permalink) Old 08-29-2017, 11:49 PM
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Given the Design of the actuator you cannot reliably calibrate the turbo by hand.

it's so stupid cheap to build a calibration tool, why not.

Here is the document you are referring to, I think

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post #9 of 39 (permalink) Old 09-14-2017, 03:44 PM
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I tried the method described in post #18 of this thread last night on my 08. It worked perfectly. I would add one step though. I would perform the procedure once and mark on the gear with chalk or something then perform the procedure again making sure the gear stops in the same location just to make 100% sure you get the right spot.

https://www.cumminsforum.com/forum/07...bration-2.html
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post #10 of 39 (permalink) Old 09-14-2017, 06:25 PM
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Does your code works with HE300VG?

Quote:
Originally Posted by me78569 View Post
Given the Design of the actuator you cannot reliably calibrate the turbo by hand.

it's so stupid cheap to build a calibration tool, why not.

Here is the document you are referring to, I think

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post #11 of 39 (permalink) Old 09-24-2017, 11:38 PM
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Same question here. If my programmer/scanner can do custom CAN commands, can I possibly just enter the "lo_byte, hi_byte, 0x02, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF" commands?

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post #12 of 39 (permalink) Old 09-24-2017, 11:41 PM
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Quote:
Originally Posted by tob_e View Post
Does your code works with HE300VG?
Here is an article I created to help you guys out with tubro calibration

https://mopar1973man.com/cummins/art...ntroller-r531/


If you can send can commands then send that command to ID 0x0CFFC600

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