6.7 MCC Tuning

[Idiesel]

I haven't found to much on this in the search bar. So i was hoping to start this thread to get/give some insight from/to everyone that has tuned and hoping to tune. I'm new to the whole MCC thing and just opened the files today and have questions about the tables and what everything means.

For my first question on the desired turbo boost. What does EOM ?/ Temp ? represent? I'm wanting lower the boost down so it doesn't spool much more than 26 psi. This is just my starting point till I can get more familiar with everything.


If anyone else has any questions dont be afraid to hijack the thread, i want this thread to be a helpful tool for everyone.

[allenhood71]

Sub'd.... Been wondering about this as well.


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[BIG Laing]

I have never seen the desired turbo Pressure. I know with H&S you set defuel parameters to prevent issues. Usually 32 PSI is set as the max turbo pressure....

[Bryce18]

Originally Posted by BIG Laing

I have never seen the desired turbo Pressure. I know with H&S you set defuel parameters to prevent issues. Usually 32 PSI is set as the max turbo pressure....

Ya with the defuel settings you can make your tuner defuel the added power.if your turbo reaches s certain point But.
With the mcc tuning you can adjust turbo parameters so your truck will never reach a certain level therefore your truck will not defuel.

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[Bryce18]

OP

I have read some about the mcc software but not a ton. From what I understand you can adjust pretty much anything with engine turbo and trans.
I think user mysticblue on this forum is the one to ask. He's one of the only ones I know that has been messing with mcc tuning. But I'm sure there are plenty more.

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[Idiesel]

The stock boost pressures on these trucks are 26-28?
I know I never saw more than that. And with it going past 30 I just don't want to stress it and ruin a turbo even of it's not out of it's map.


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[BIG Laing]

Originally Posted by Bryce18

Ya with the defuel settings you can make your tuner defuel the added power.if your turbo reaches s certain point But.
With the mcc tuning you can adjust turbo parameters so your truck will never reach a certain level therefore your truck will not defuel.

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That doesn't make sense to me. How else besides defueling would MCC prevent the turbo from going over a certain PSI?

[Idiesel]

Originally Posted by BIG Laing

That doesn't make sense to me. How else besides defueling would MCC prevent the turbo from going over a certain PSI?

You set the tuning tables in MCC to only desire so much when you put the pedal down.


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[Bryce18]

Originally Posted by Idiesel

You set the tuning tables in MCC to only desire so much when you put the pedal down.


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Correct. Or this is what I understood from my readings.

For example for the Turbo, you have the ability to adjust:

Turbo Desired atmospheric air flow

Turbo Desired compressed air flow

Turbo maximum closed position

Exhaust brake upper/lower limit turbo actuator

Exhaust brake maximum torque limits


The last 2 adjustments for exhaust breaking I wouldn't think would help with reducing max turbo boost, although making adjustments to the first 3 would have the ability to adjust how fast the turbo spools up and to what psi it boosts to. But I'm not an expert. Lol this is just what I have acquired from my research.
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[DirtBikePilot]

I did just this. I changed the turbo control tables so my boost never goes over 28 now. It was pretty easy, just changed all the values so 32 was the max, and made sure the numbers tapered back down in a proportionate fashion. I also changed the vane position tables by a proportionate amount. I don't know if that was necessary, but it made sense to me.