Post-tune behavior of DPF different?

[dgeist]

I moved to a tuned ECU recently and have been experiencing a strange condition with my DPF, notably that I'm NOT seeing messages about regen.

In factory state, I had been getting the "you're about to have a regen, please drive a constant speed for a while" jazz once a month or so, but now: Crickets. Is there any way to tell (short of getting a scan tool that supports the features) if my DPF is in a good state? I haven't noticed any drive-ability issues, but it's always odd when something changes without cause. I wouldn't have thought my tune would make this change to be LESS frequent.

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[grimmjeeper]

I have had my Jeep for 4 years and have never gotten a message about needing to regen on the dash. It always does them quietly.

If you get a notification on the dash, you are doing too many short trips and not letting the regens happen in the background.

Now, I have a Banks iDash and I see regens when they happen. I also see the soot level going up over time so I can know when to expect the regens. But none of that shows up on the dash.

 

[Grayhound]

Can't imagine owning a diesel without a way to monitor after treatment equipment. Scanguage II is pretty cost effective and will save you emissions woes down the road.

 

[Tread4Lo]

I don't know why you aren't getting those messages after tuned.

If you are getting those messages on the instrument cluster stock, you are interrupting your regens too often and it has not been able to run in full. Your Jeep needs to do a full regen cycle (without interruptions), so drive the Jeep down the highway for 10-15 minutes to get it done. I had this pop up once. After that, I bought a scanguage 2 for approximately $100. I was able to monitor when I was in a regen (because factory wise you don't know). Never had the "continue driving..." message again.

With a tune (as long as it is stage 1), will have no effect on regens. They will perform whenever the predetermined parameters are met. These are 80% soot load or certain amount of miles.

 

[dgeist]

Can't imagine owning a diesel without a way to monitor after treatment equipment. Scanguage II is pretty cost effective and will save you emissions woes down the road.

I have an OBDLink and have used it for years on my other diesel (which is pre-DPF and pre-DEF) and I believe there's an add-on module for the app interface. I might investigate that just for awareness.

 

[Grayhound]

If you find an app, that's Android, auto or carplay compatible, please let me know.

 

[dgeist]

Thanks for the feedback so far, all. I hadn't THOUGHT I was doing that many more short trips on the previous ECU, but now that I think about it, I have done several road trips WITH the tuned version. Perhaps that's enough to "keep me in curry" so to speak.

 

[AC77]

I have had my Jeep for 4 years and have never gotten a message about needing to regen on the dash. It always does them quietly.

If you get a notification on the dash, you are doing too many short trips and not letting the regens happen in the background.

Now, I have a Banks iDash and I see regens when they happen. I also see the soot level going up over time so I can know when to expect the regens. But none of that shows up on the dash.

Thanks for saying this, i thought i was diesel dumb lol

 

[rickinAZ]

As others have mentioned, it sounds like you don’t have an iDash or ScanGauge. The only time the Jeep’s instruments will alert you is when you’ve unknowingly — because you have no gauge — interrupted multiple active regens prematurely. If that happens too many times, you’re asking for trouble. Without a gauge, you’re essentially flying blind. No idea why Jeep didn't make one as standard equipment.

If you’re looking to upgrade, go with an iDash/PedalMonster combo from Banks. It still gives you that satisfying “seat-of-the-pants” performance boost without voiding your warranty. Once you need a new DPF — and that will very likely happen before your 96-month warranty is up, given your driving habits — having a tune installed will guarantee your warranty claim gets denied, leaving you with a $3,000-$4,000 bill. [An independent shop will be a somewhat cheaper alternative.] They will check for a tune, no question. That’s exactly why I ended up removing my Derringer.

I say "given your driving habits", because to get yourself in this situation you must be driving too many short hops in order to have disrupted SO many active regens. And...it takes quite a few disruptions to trigger that error message.

 

[cnapierala]

What tune do you have? The GDE tune SIGNIFIGANTLY reduces your need to regen and pushes out the passive regen cycle to 1000 miles instead of approx. 800 miles from the factory. The tune just runs cleaner and produces less particulats so the % full stays much lower.

 

[dgeist]

What tune do you have? The GDE tune SIGNIFIGANTLY reduces your need to regen and pushes out the passive regen cycle to 1000 miles instead of approx. 800 miles from the factory.

Not that one...but regardless: I've been quite happy with it so far and (still) haven't noticed a regen happening. Hopefully it's just seamless and I'm not noticing it.

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