2018 6.7 6 speed mm3 tuning issues possibly

[Aaronn]

Bought complete delete kit from t&k performance with throttle valve delete CCV exhaust egr....

Had an issue with blue smoke on decel in lower gears like 2nd to 4th area at low speeds, he sent me another set of tunes didn't fix problem and now I have a bump/hiccup while driving normal or under load not all the time but definitely happens ever time I drive it, hard easy slow in throttle or just cruising, is this just a tuning issue or something else I should look at, truck has 8k miles so I wouldn't think something on my end unless I need to plug in or unplug something else everything is deleted

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[RamIt]

Pull the intake apart and check for signs of oil; dont forget to check the turbo.

When you say hiccup, are you implying that during roll-on throttle the truck stutters?


Out of curiosity, what HP tune are you running?

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[Aaronn]

I don't have a problem writing this guy off and buying new tunes I just wanna make sure this is issue before I spend the money to make it right

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[Aaronn]

Yes roll on throttle truck stutters could be easy or to floor, rail pressure looks fine, 60hp tune

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[Aaronn]

And I haven't seen smoke lately if I had to guess happens in colder months, the stutter is the part that is annoying

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[RamIt]

The smoke could be bypass oil, unless its heavy and persistent, I wouldn't be super concerned with that.

I had a bunch of issues with a 60hp tune in my truck, the rail pressure would spike to almost 30k and cause a lot of bogging and stuttering. Switching to a 120hp tune fixed all of my driveability issues.

Since you have a MM3, I would suggest logging Throttle Position, Boost, Rail Pressure, Injector Duty Cycle, and TQ Lock Up. Post the results here and lets see what the community can figure out.

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[Aaronn]

I have a 6 speed stock clutch that's why I was staying at 60 or 30 hp both do it, if i step up anymore clutch will slip, I'll log everything though

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[watersupply189]

Bought complete delete kit from t&k performance with throttle valve delete CCV exhaust egr....

Had an issue with blue smoke on decel in lower gears like 2nd to 4th area at low speeds, he sent me another set of tunes didn't fix problem and now I have a bump/hiccup while driving normal or under load not all the time but definitely happens ever time I drive it, hard easy slow in throttle or just cruising, is this just a tuning issue or something else I should look at, truck has 8k miles so I wouldn't think something on my end unless I need to plug in or unplug something else everything is deleted

Welcome friend!!


2016 Ram Laramie 3500, G56, 6.7, MM3 by Double R Diesel, Rough Country Leveling, 35x12.50 Nitto G2, HID headlights and fogs plus many many other add ons.....

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[RamIt]

I have a 6 speed stock clutch that's why I was staying at 60 or 30 hp both do it, if i step up anymore clutch will slip, I'll log everything though

oooooo you're a G56 guy, that changes a lot.

The stock clutch doesn't do well over stock power, I'm wondering if you're getting slip anyways.

Log RPM, Boost, Rail Pressure, Inj. Duty Cycle, and Transmission Output Speed

5th gear is direct drive. So get up to 5th and begin a log and do a few pulls.

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[Aaronn]

Will do thank you

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