Turbo Surging at Idle with Exhaust Brake

[PatrickD]

Unfortunately when I first straight piped it, it never did it.

Ran it all summer and now that the temps are coming back down and the exhaust brake it kicking on at warm up I noticed it doing it.

So the issue definitely started happening post tune.

Whatever it is, hopefully someday someone figures out what is causing it and sheds some light.

I’d love my truck back to normal!

 0 Comment(s)

[RamIt]

Unfortunately when I first straight piped it, it never did it.

Ran it all summer and now that the temps are coming back down and the exhaust brake it kicking on at warm up I noticed it doing it.

So the issue definitely started happening post tune.

Whatever it is, hopefully someday someone figures out what is causing it and sheds some light.

I’d love my truck back to normal!

Every one of these trucks do this at some point in time. Mechanically you have zero issues. Does it make an annoying noise? Absolutely. But that's about it.

My unproven theory is that the actuator moves the VGT out of range post-tuning; causing the system to attempt to move the nozzle back into range.

The only way to prove that would be a running data log from stock until the problem occurs.

 0 Comment(s)

[Dweldy]

I have a 2013 I have owned since new.

Tuned/studded/dual disc at 15k almost 80k now and it has just started doing this.

It sounds terrible and my butt dyno says it runs better some days than others so I'm thinking my actuator is acting up.

 0 Comment(s)

[watersupply189]

I have a 2013 I have owned since new.

Tuned/studded/dual disc at 15k almost 80k now and it has just started doing this.

It sounds terrible and my butt dyno says it runs better some days than others so I'm thinking my actuator is acting up.

Welcome friend


2016 Ram Laramie 3500 (DRD), G56, 6.7, Rough Country Leveling, HID headlights, Morimoto LED fogs plus a whole lot more!

 0 Comment(s)

[willisink]

Hello did you ever figure out the surge?

Mine is doing the same thing.

 0 Comment(s)

[Rkennedy]

Mine just started doing this after I replaced my actuator last night. I used a complete city diesel unit. Only does it when it’s warming up and the exhaust brake is on or all the time, idling, if your running the “whistle” tune. When it’s surging the boost raises and falls slightly along with rpm’s. I unplugged the MAP sensor and it smoothes up right away. Still stays at roughly 93% turbo position, still whistles, just no surging. Hmmmmmm

 0 Comment(s)

[AK Bob]

Mine just started doing this after I replaced my actuator last night.

I used a complete City Diesel unit.

Only does it when it’s warming up and the exhaust brake is on or all the time, idling, if your running the “whistle” tune.

When it’s surging the boost raises and falls slightly along with rpm’s.

I unplugged the MAP sensor and it smoothes up right away.

It still stays at roughly 93% turbo position, still whistles, just no surging.

Hmmmmmm

On the whistle tune issue, City Diesel has previously disclosed that due to their actuator design, it’s not going to work correctly.

Whistle Tune Surging

https://r.tapatalk.com/shareLink/top...ink_source=app

 0 Comment(s)